I was just wandering when you set the three pokemon free from vellstone..

This is what you should be doing.

Take Saturn's advice (did you have a choice?) and press the button on the
Consol. Apparently, Cyrus has gone and shackled something in chains on Mt. Coronet. As you take the yellow warp out of there, you'll notice that the path
To the green warp has been cleared, allowing you to leave. Don't forget to pick
Up the PP Up on the left side of the building after you leave.

The Coronet Mountain is obviously the next place you need to go. However, there
Are multiple entrances to it. The way you want to enter that will allow you to
Progress in the game's story is traveling west from Hearthome City. =------------------------------------=
=- c. Hearthome City and Route 208 -=
=------------------------------------=

Before you head straight into the mountain, know that a very pivotal point will
Occur in the game. In fact, up ahead is pretty much the ending of the game's
Plot. After this, only the Eighth Badge and the Elite Four will be in between
You and the game's end. Because of this, head to the Pokemart and prepare
Yourself (make sure you carry two Pokemon Center trips-worth of supplies) for
One long journey ahead. In addition to many healing items, buy many higher-end
Repels and many, many Dusk Balls. Dusk Balls, when used in dark places and at
Nighttime, have the highest chance of capture over all other conventional
Pokeballs, at 4x (Ultra Balls are at 2x). Oh, and get an Escape Rope.

Don't bother healing now if you haven't taken care of everyone at Route 208. If
You think that absolutely no one will stand in between you and Mt. Coronet, go
Ahead and heal and head that direction. If not, don't bother and beat all the
Trainers that might needlessly hurt your Pokemon before you take one_big_trip
Into the mountain.

Once you've cleared every trainer that might get in your way, heal and then
Head straight to Mt. Coronet, past Route 208. Use normal repels over the grass
In Route 208, and then once you get into Mt. Coronet yourself, begin to use
Your Super and Max Repels. Wild Pokemon should be the last thing to waste your
Time and Pokemon's health.

=-----------------------------------=
=- d. Mt. Coronet and Spear Pillar -=
=-----------------------------------=

When you arrive in Mt. Coronet (the part where you start using Super and Max
Repels), either by breaking the rocks below or by running around over the
Ramps, move towards the left. You can if you like, now that you can surf, pick
Up the Dawn Stone at the very bottom of the cave. In this room, move all the
Way around to the very top-left part, past the exit on the left. Surf right
Across the small expanse of water. Pick up the obvious Protein. When you get to
The very right, carefully walk along the edge and rock climb to the next area.

Walk the only way you can in the next place, picking up the obvious Max Potion
And the not-so-obvious Ether hiding at the stone on that same elevation. When
You have the option of traveling further, instead head down to collect an
Escape Rope. TM80 (Rock Slide) is in this convoluted area in addition to a
Revive. I'm not going to give directions in this silly room, but I will tell
You that you want to leave this room by the dark opening in the upper-left, and
Not the exit to the bottom-left.

When you go into the next room, walk up the obvious staircase. After you reach
The next room, head immediately to the stairs on the other side, picking up a
Hidden Max Revive in this dead-end room. Of course return to the three-way
Room.

In the three-way room, a Grunt that's difficult to dodge has one level 40
Beautifly. I suggest you dodge her unless you think you can act first and end
The match in one move. Further in this room is a guy who's actually not that
Hard to dodge, believe it or not. Basically, he only looks up or down--not left
Or right. Run around the first rock when he's on the left, and then pass the
Next rock also when he's on the left. Only move to in front of the door when
He's out of sight. Walk outside afterwards.

When you come outside, you can stop using your Super Repels and switch to the
Normal Repels as you walk through the grass--your job right now is
Preservation. In the first patch of grass is a hidden Full Heal. After you
Climb one set of rocks (climbing the second set will only net you one hidden
Nugget), walk south-west, moving stones to avoid the massive patch of grass and
Break the rock at the very bottom-left to pick up a hidden Max Potion.

In the entrance to the mountain on the very right, there is a hidden Ultra Ball
Up a big ramp going up. However, continuing this way does you no good, as you
Cannot climb waterfalls, not having the Hidden Machine or the Eighth Badge. Because of this, you might as well exit and head for the other entrance to the
Same place from the far left--which requires no Repels to get to.

When you re-enter from the left, use a Super Repel and run up to climb the
Wall. The Grunt only looks left, even though he will battle you. The next Grunt
Isn't so easy to dodge, although it's not that difficult. You can pick up an
Obvious, though hidden Escape Rope at the rock below on your way out.

When you go outside, know that there's no reason for you to walk into the big
Expanse of linear grass unless you're dying for a Rare Candy. Outside, the only
Other thing of use to you is a hidden Big Mushroom, towards the very bottom,
Which is also the very northern-most part of the downgrade. There are two more
Entrances into the mountain--you want to go up, so walk all around towards the
Left to continue to the insides.

In the next room there's nothing, so continue up the stairs. South and above is
An inevitable fight with this Grunt and her level 38 Bronzor and Glameow. Hidden on a rock directly below that fight is a Stardust. Unfortunately, you'll
Have to fight one more Grunt, with his level 37 Bronzor and Golbat. Head up the
Stairs.

I tell you what--Game Freak hates you. In the biggest battle of preservation
Ever, they throw _another_ mandatory Grunt fight at you in this next room. She
Starts off with her level 37 Golbat. If you have an unhealthy habit of raising
Your Pokemon perfectly equal like me, forget about it for now--at this point
Only use what works best. You fight a level 37 Glameow followed by a level 37
Bronzor, after which the fight ends. Anyway, I must say--isn't this room
Foreboding or what? Check out the design. You don't have to save before you
Walk outside--I always tell you where to save.

You have one last annoying fight to deal with, and this time it's a Double
Battle! First up is a level 38 Dustox (Flying, Rock, Fire, and Psychic moves'
Damage--2x) and Stunky (Ground 2x). The second set is a level 38 Glameow
(Fighting 2x) and Croagunk (Psychic 4x, Flying and Ground 2x).

Up next is the end. Congratulations for surviving this far. It's not easy to
Tell when you lose control, so I'll tell you how many steps are too many before
You save. Using a reset Step Counter (Poketch app 04), walk 12 steps from in
Between the two Grunts, and then save. If you feel that it was somewhat
Difficult to _perfectly_ understand my directions, you might as well save in
Between the two Grunts. When you take the 13th step towards Commander Jupiter,
Commander Mars, and Boss Cryus, you cannot turn back.

Cyrus will summon either Dialga or Palkia. Can we say epic? After Cyrus rants
Some more, you will gain control again. Walk in between Mars and Jupiter,
Knowing that two level 41 Bronzors will come your way first, and with the help
Of your rival kick their butts. A level 42 and level 41 Golbat will replace
Each Bronzor. By the way, the left Pokemon on the bottom screen is the bottom
Health bar, just in case the double pairs confused you. A level 46 Skuntank
Replaces the level 41 Golbat, and a level 45 Purugly replaces the level 42
Golbat.

Thank the heavens that your rival heals your Pokemon before he leaves. After
Some dialogue, I suggest you pause it for a while once you start to see either
Dialga or Palkia radiate--you don't see that many cool things in Pokemon that
Often. Hooray! The Pokemon you helped out not only stopped the world from
Ending, but they also stopped Cyrus from ever attempting to end the world again
By breaking his chain. Cyrus, having been pwned, will take his vengeance on
You. He'll start the fight off with his level 45 Honchkrow (Dark/Flying-Type). Cyrus
Will withdraw Honchkrow in a heartbeat with his level 45 Gyarados (Water/
Flying-Type) if you do significant damage to it. Gyarados will also be the
Pokemon that follows a fainted Honchkrow. If Gyarados ever uses Giga Impact and
Your Pokemon survives, know that Gyarados must recharge after he uses it. Third
Comes Cyrus's level 48 Weavile (Dark/Ice-Type). Lastly, all you have to deal
With is Cyrus's level 46 Crobat (Poison/Flying-Type; he was nice to his
Golbat?).

Take his 8640 Pokedollars like this sucka was a Gym leader, because he was just
As tough. When they leave, your friend and Professor Rowan come to give you
Some words of encouragement. Luckily, you have the option of using your Pokemon
Center's worth of healing supplies that I told you to buy. That, and you have
The option to save. Now I'm going to describe both Dialga and Palkia.

Dialga at level 47 is a Steel and Dragon-Type:
(+) Fighting and Ground-Type moves does twice as much damage to it.
(-) Normal, Ghost, Steel, Electric, Water, Bug, Psychic, Dark, Rock, and Flying
-Type moves do half as much damage. Grass-Type moves do one-quarter damage.
(x) Poison-Type moves do no damage to it whatsoever.

Palkia at level 47 is a Water and Dragon-Type:
(+) Dragon-Type moves do twice as much damage to it.
(-) Steel-Type moves do half as much, and Fire and Water-Type moves do only
one-quarter as much damage to it.

With this in mind, adjust your starting Pokemon accordingly. I suggest you
Capture it. There is absolutely no reason for you not to. Not only that, but
Don't ever use a Master Ball on a rare Pokemon that's stationary. Always use
Things like Dusk Balls, Timer Balls, and Ultra Balls. What if you luckily came
Across a non-stationary legendary that runs away when you first see it? Those
Are times for Master Balls.

Anyway, make sure you save immediately after the Cyrus fight, and after you
Heal your Pokemon. After I got it into it's red health, with it pwning one of my
Pokemon in one move (either Pokemon has it's own super move which causes it to
Charge the next turn), I caught it with my _first_ Dusk Ball--see how awesome
These things are? I bet that you'd really feel stupid if you used your one
Master Ball on it. Now, of course the Dusk Ball won't capture it in one try for
Everyone--I was somewhat lucky. However, I promise you that capturing it
Without a Master Ball isn't that hard, even without dumb luck.

Your friend and Professor Rowan will take you away from where the fight with
Either Dialga or Palkia was. However, don't immediately leave. Instead, because
You really don't want to come back up here a second time, run ALL the way back
Up, past where the legendary stood, and pick up a special item. If you have the
Diamond version of the game, inside the Pokeball is an Adamant Orb, which
Increases the Steel and Dragon-Type moves of Dialga. If you have the Pearl
Version of the game, instead will be a Lustrous Orb, which increases the Water
And Dragon-Type moves of Palkia.


This is courtesy of www.gamefaqs.com

You have to head to hearthome and go into mt. Coronet and head after team galactic (if you read it you wouldve known that.)

Now, stock up on revives, full restores, 5-10 max repels, and 20-30 dusk balls. Fly to Oreburgh City, heal up if necessary, and go north [up the mud slide, and east to enter Mt. Coronet]. Surf across the little river, and up the wall. Now, go as north as you can and exit outside to be on the Mt. Coronet mountainside. There are 2 caves to take from here; one is a dead end, the other is a connection to the second mountainside. In the second part, the correct cave to take is all the way to the west in this area. Then, just follow the path and you'll eventually be in Spear Pillar, where you'll battle two Galactic grunts, Mars and Jupiter, Cyrus, and DIALGA!! Before you battle Dialga, save your game and continue when it is night in-game. When it's night, weaken Dialga and inflict a paralysis or sleep condition if possible. Start chucking dusk balls and you'll have it in no time, since Dusk Balls have a 4x chance of succeeding at night. Now that this is over, go back to the back of Spear Pillar and obtain the Adamant Orb. Then, exit Spear Pillar/Mt. Coronet and fly to Pastoria City to continue onward to Route 222 and into Sunnyshore City!

They will be found at each of the lakes where they can be caught at your own leisure except for Mespirit who will wander around until you encounter it (Use pokedex to track it as it changes locations often and when it is in same area, walk in grass to find it)
Note: Mespirit will try to run at first opportunity so either catch with masterball, hope for best straight up or use move/ability to prevent escape. It will retain damage and conditions (Except Confusion and Leech Seed) for each battle if it runs.