ah well pci's pretty dead
zotac still makes a geforce 6200 in pci flavor
it should still help with the movie playback
I suppose if its just got pci slots theres probably no sata ports = no new hard drive either
if the case is ATX formfactor
check out a
upgrade combo package
gut the case of the old stuff and slap in the new stuff...
altho id suppose power supply would have to be upgraded as well to a 24pin instead of the old 20pin