No. First you must send your Pokemon over to Sinnoh via Pal Park, and then you can use them (as they will be on Diamond, Pearl or Platinum).
To battle Pokemon in Fire Red/ Leaf Green in Emerald you need to beat the Elite 4 and gain the Nat. pokedext. then you can Trade and Battle Pokemon using the trade and battle mode opptions in the Pokemon center. Some trainers have Pokemon from Fire Red/ Leaf Green.
no. Pokemon battle revolution can only take Pokemon from diamond/pearl
No you cant because Pokemon White and Black has new Pokemon that Pokemon battle Revolution cant use
Yes you can use Level 100 Pokémon in Pokémon Battle Revolution.
You can NOT battle Professor Oak in Pokemon FireRed Version, even with an Action Replay
You can only use people's friend passes on free battle.
No.
No.
Once you get the 7th badge you will be able to use rock smash outside of battle.
Yes and you can also use Heartgold and Soulsilver.
ofcource you can
No but there is a battle tower on one of the seven islands.