DVD Drivers Needed, Samsung SD-608

I have a Samsung SD-608 running on a PII 333mhz, 256 mb ram, ATI Xpert 2000 video card. Unit functions perfectly as a CD-Rom drive, but I cannot get it to function in a DVD mode. Tried scouring the internet for a driver or software, but to no avail. Any ideas on how I can get the DVD functions to operate?

Do you mean, you can't actually play a DVD movie? Do you have a DVD Player software installed? If so, which one? Have you checked the Regions? Have you checked another DVD movie?