I put a liteon 22x internal dvd writer in the computer, used the nero disc that came with for set up. I plan to use my 123 copy dvd program. If nothings in the drive it says its a dvd-ram in my computer, If I put a blank dvd in it changes to cd-rom, and it says nothings in side. I tryed burning a dvd but when its time to put in the blank it gives an error. I bought another burner prior, had the same problem, sent it back thinking it was a bad burner. Why wont the computer reconize its a dvd-rw. Its a older dell demension 4100, with windows xp. Thanks.