After a long time to find et compile the driver for Ubuntu i thing the compilation are different in BT.
i find the last driver : http://www.ralinktech.com/en/04_supp...se.php?sn=5034
and lot of post for modify the make file etc...

I'm a beginner in linux and backtrack, i need for use it a wireless dongle and for the moment it's WND4100. and i don't have enough brain to do it by my self

Any body have help for me??