hey, i have recently installed windows 2k with sp4, but am having a problem with installing an ac97 sound driver. Halfway through install i get a message saying 'digital signiture not found', i have the option of clicking next to continue. A few seconds later the pc restarts, and the installation fails to complete successfuly because of that problem. i dont have xp so can't install that by the way. any helpful solotions most welcome!!!