BackTrack USB Wireless adapter drivers issue

I purchased USB Wireless adapter which runs smoothly on **Windows** and **Ubuntu**, but in BackTrack it's showing me a **Bad password** issue. From my reading I guess it's driver issue which BackTrack Kernel don't have drivers for RTL8191SU (my) Adapter. The Realtek site have drivers for kernels 2.6-2.9. Even thought BackTrack 5R3 comes with 3.2.6, I tried to compile drivers which failed for me with **make** errors. Additionally I can't get monitor mode in aircrack suite.