Ok I have two questions ?

If you have a Pok�mon that knows Dig, go the the inscription at back of the room and use Dig in front of it. If you have Relicanth in the last position in your party and Wailord in front, enter the next room and read the inscription at back; a tremor will occur and the sound of three doors will play.

1. Catch Groudon and Kyogre or Rayquaza, how go to the weather institute go up to the guy that gives you Castform and he will tell that where groudon is seen and Kyogre thesame way as groudon but not the same routeand complete your Pokedex and try defeating the brains in the battle frotier
2.use dig to go in the northern wall and put relicanth to the back of your team and wailord in fronth then go up and read and an earthquake will be triggered and 3 doors will open far away thats how to get the Reigs located at
north west of dewford town,west of lilycove and south of the dessert
Sniff smell yah later !

dark_blaziken

1.Nothing, you just beat the battle frontier.
2.Yes, you have to do something.

1. You can do many things. You can get the other fossil in Desert Underpass, you can visit the extra area of the Safari Zone, you can get all 5 master ribbons in the Pokemon Contest, you can attempt to catch all 386 Pokemon, etc. It just goes on and on.

2. Actually, both. First, in the back wall, the braille letters say "Dig Here". So, use dig there. Then, the back wall in the next room says "First comes Relicanth, Last comes Wailord" or something like that. If it's not that, it's vice-versa. Anyway, put Relicanth first in your party (or last) and then put Wailord last in your party (or first). Once you've done that, the Chamber should shake, or there should be an earthquake, or something. If not, try to switch relicanth and wailord and then see what happens. Once the earthquake does occur, that means that the doors to the Regi's leirs should have been opened. I won't go into detail, especially since that the details to catching the Regi's would be in one of the walkthrough sections. (If the steps are the same as it is in Ruby/Sapphire, IT'S FALSE!!!)

01- nothing, only catch all 386 Pokemon, collect all the battle frontier symbols, and train your Pokemon to the top
02- you must have a wailord and a relicanth for unlock the doors to the 3 regis, one in the desert, one in the route near fortree city and the other.. I don't remember
Look on different sites for the exactly places of the regis and how you unlock them

Q1-Search for Latios/Latias, fight the brains(WHERE ARE THEY?!), continue to challenge the battle frontier and complete your Hoenn and National Pokedex.

Q2-In the sealed chamber you must first go to the top message thing, then have one of your Pokemon use dig. It will open. Then on the next one put a WAILORD at the front of your party and press the message, and press it again. OPEN. OPEN. OPEN. "It sounds as if something opened from far away..."
Buy the guide, it can help you decode the messages. The locations to go to now are route 105 Island Cave, Route 111 Desert Cave, and the route just before lilycove. Ancient Tomb.

1. Complete your Pokedex and achieve all of the seven Battle Frontier Symbols.
2. On the first wall with the braille inscription on it, use the move Dig. The door will open and you will gain access to the second chamber. Press the A button at the second wall with a Relicanth in the first position of your party and a Wailord in the last position. After the tremor, the three Regi Pokemon will be accessible in their respective locations.

1.You collect al 14 badges form the battle frontier.you get two at each venue,one silver,and one gold.You also have to complete the pokedex,all 386 spaces.that should keep you occupied until a new game comes out in 06


2.in the sealed chamber,you unlock the doors for the Regis(rock,Ice,Steel).the way to do this is to
A)take a Relicanth and a Wailord,and a Pokemon that knows dig.
B)put Relicanth 1st,and Wailord 2nd.go to far wall,and use dig.
C)go to wall and read Braille,and you will hear noises.
The locations of the regis are:one in the desert,one between Fortree and lilycove,and one between Capt brineys and dewford(surf)

By the way,the brains appear when you get a winning streak,which is usually to win each one 3-5 times for the silver symbol,and I'm not sure about the gold ones,because I am still on with it.