Vid card for st61g4?

[nightfly]

I have an old Shuttle st61g4; has a pci and agp slot, pentium northwood 3ghz, 1 gig ram, running xp sp3. Works fine, but I would like to play my blue ray disks in it, and the 2003 era imbedded ati9100 chip can't seem to handle it. Anyone know a decent cheap video card that will fit into it, in one of the old expansion slots? Yes, I know I could just buy a set top box, but I just want to be able to watch HD stuff in addition to basic computing. I'm not going to be playing any modern games with it.
Thanks.