BackTrack USB Wireless adapter drivers issue

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http://unix.stackexchange.com – I purchased USB Wireless adapter which runs smoothly on Windows and Ubuntu, but in BackTrack it showing me 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 cant get monitor mode in aircrack suite. Any possible solutions or instructions? (HowTos)