Re: gforece 3 does not like pdf's
I'm going to assume that this is isolated to Adobe. Try reinstalling it, or switching over to FoxitPDF reader and loading a .pdf file. It doesn't sound like a video card problem to me.
Specs: AMD Athlon 64 3200+ @2.5GHz/512 MB PC2700 RAM/80 GB Western Digital Caviar/15 GB Maxtor/Diamond Viper X1950XT 256MB/Dell 1907FP 19" LCD Monitor/ASRock 939Dual SATA-2/1.44 MB Floppy/40x-12x-48x CD-RW/8x DVD-ROM