Finally got it working..... problem is backtrack 4 doesnt like our wireless card for some reason so i downgraded to backtrack 2 and followed this guide Basic injection with ipw2200 and BackTrack v2...

Hi, Im having probs with 2200bg (ipw2200) aswell... when I try to inject it says something like the ap is on channel 6 but rtap0 is on channel 0 ...ive tried changing rtap to channel 6 but it doesnt...