i have a problem which is i cannot use my line in jack for speakers as in xp, after i installed windows 7 , and i installed the latest realtek hd , i didn't find any way to change my line in output at all, when i plug in any cable it just says "you have pluged an audio device" , my M.board is gigabyte 945gcm-s2l, i want to use my headphone with the speakers.