You can't unlock Pokemon, you have to have D/P/Pt (either one of them) then go to the Pokemon storage on Battle Revolution and turn on the DS with one of D/P/Pt then on Battle Revolution press "Copy Pokemon from DS" (or something like that). Then on the DS say "Connect to Wii". On the Wii it should say something like "Copying Pokemon from DS". After it is done on the DS it will say "The DS system will now shut down". And then on the Battle Revolution you should have the Pokemon you have in D/P/Pt. (Your Pokemon will NOT level up on the game, you'll have to copy the Pokemon each time you get a new one or level one up for it to be updated on PBR).
You're welcome. :P