wat up everybody im 've been using backtrack since bakctrack 2 , but with backtrack 4 beta im having problem cuz i have a laptop hp pavilion dv7 4GB memory, amd turion x2 64 , 64 bit operatin systema and ati radeom HD 3200 graphics ,, i didnt install backtrack 4 cuz , everytime im bootin backtrack everything goes well but , the brightness is to high and is killing my eeyes i dont know how to modify the brightness , can anyone hellp on da some commands , thanks