the dream world is a website with minigames and such, found at pokemon-gl.com, first of all you need to make an account on the website then use the game sync from your game's C-gear to get a sync code to link your game card to your online account. Then you access your game sync and tuck in any pokemon from your boxes or party that gets sent to the dream world. Then when you log in to pokemon-gl with a pokemon tucked in you can access the dream world. Then follow the tutorial for the DW.
The pokemon transfer lab will let you transfer pokes from Pt. need two ds's though, not tried it but it's on route 16 I think next to black city/white forest.
The GTS is found in top of PC, the furthest right person, then select global trade.
