I used to get some strange texturing errors on my ATI X600XT and lineage. Things like spider would appear to have a black web around their legs. Try posting on some WoW fansites. MMORPG gamers play for so many hours that some are sure to notice your porblem if it is a universal issue.
AGP won\'t fit in PCI-E... unless you use a really good hammer. ~Trotter