[all variants] Wifi card driver trouble!!!

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http://ubuntuforums.org – i have installed Backtrack 5 r2 (GNOME) on my toshiba satellite p855-s5200.. I have little experience with the command line other than running a server however this time i am clueless. i have no idea what wifi card i have and what drivers i need to get my wireless networking working with backtrack. please help! (Hardware)