DvD RW/CD RW will not recognize Disks?

I have an Hp Pavilion a1133w Media center desktop PC. It is supposed to have Windows XP Media Center 2005 on it but does not at this time. It has XP Pro SP2 on it. When I put this XP on it to make this PC to work the software did not have all the original drives for this pc on it. So I had to track down several drivers for it to get it to work right. I had to delete the original partion to put on this XP cause restore disks would not work I had contracted a very bad bug from a down load.
Well now the drivers don't seen to work for this DVD drive. It will recognize one disk only all other disks it will not touch. The DVD drive is a LITE-ON DVD-RW SOHW-1633S. I have tryed to find the right drivers for this drive and absolutely no luck. Can someone help me with this problem?