Hi I need help with the 7 gym I have the walkthrough book but it don't..

I can tell you this much right here, I had the walkthrough when I got Emerald and it helps. But anyway away from the point.

First, the 7th Gym Leaders use:

Xatu Lvl 41
Lunatone Lvl 42
Solrock Lvl 42
Claydol Lvl 41

You have only 1 Pokemon that could survive for a little bit, which is Wailmer(who should be a Wailord by now.)

First off, get all your Pokemon to Level 42 or better. They do Double Battle, so use Marshtomp(who should be a Swampert at Level 36) and Wailord. Have them both use a Water Move or if they have Ice Beam, Ice Beam.

Second, your team is poorly rounded. 1 or 2 Pokemon could easily beat it. You need to round it off better with Pokemon like Gyarados as your secondary water type, Manectric for an Electric, Tyranitar for Rock/Dark, etc. Hope this helps.

Ditch your mightyena for an Absol..it's much stronger than that rubbish. Ditch all your water Pokemon except Mashtomp. Ditch golbat aswell...he's weak unless he evolve's to crobat. I suggest that you get some USEFULL Pokemon this time..those you pick are highly childish pokemon. Come back when you got something stronger and balanced.

Wow... Get a good Electric monster or Grass monster. None of those you have will do well 'cept maybe Marshstomp (which evolves in 1 more level so go trin him a bit). Get them each to level 50 if you wanna keep that team. I suggest go re-fight trianers. Wild battles don't earn you much.

You can't turn the Pokenav thing off. I've never heard fo a Day Care trick... It's probably a lie.

~SGX

You should have Pokemon like this:

Lv 37+

Gyrados
Absol
Heracross
Your starter (best one is torchic in final form)
And a very strong high defense rock type like golem. (because you'll have to send it out and heal your other Pokemon using it's turns)