I have had a few problems recently... i had windows XP (offical one) it came with the PC pre instaled at the shops, anyawys i wanted to try Linux, i installed "ubunto" and i fucked up windows, had to reformat my Hard drive, and then reinstall windows

i didn't get a windows disk or serial code, so now i have one from another pc, and it says i have 30 day's to activate it, to do that i need to pay £80 or something... wtf, i allready had the orginal one.

anyway's, since i reformated i need a sound driver, erm... will any do ? i don't have a clue what so ever on what i need to do here ? lol

please help :P