backtrack 5, samsung s3 and alfa 1000mw help

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http://forum.xda-developers.com – hello xda members, ive got backtrack 5 on my s3 working and everything is alright but how do i compile a driver in the kernel? ive got an alfa 1000 mw awus036nh its uses a RTL 8781ru chip and it wont work, could someone please give me a step by step giude how to install the drivers on my samsung s3? thanks alot ;) (HowTos)