ok so i have a Nintendo DS and so does my GF.
no more gbas for me, how would i go about trading through the DS's? would i still need a link cable or something or will the wifi things pick it up?
I think this answers it.
1) No you cant trade between DS and GBA. However you can transfer GBA Pokemon to DS with the PAL Park thing.
2) Your an idiot for throwing away your GBA cos now you cant play GBA Colour games.