Well, it had a Trident 9850 AGP, but then I tried a S3 Virge (Venus) PCI because I saw it in the display adapter list and thought it would have the resident drivers.
I think you are right about the Service Packs. I didn't set up the system, and as far as I know no service packs have been applied.
Service Pack #3 deals a lot with display adapter installation?
Thanks for answering!