Originally Posted by XDanger
Whats the cheapest graphics card that will do that?
He's not interested in gaming.
Try playing it in xbmc. It'll probably do it just fine in software alone. Some players, e.g. WMP, VLC, and a few others will play like crap even on much faster computers. But players like XBMC or MPC-HC will happily play on almost any circa 2002ish or later CPU.
If it does run a little choppy, then try pretty much any 8k series nvidia card, even the el cheapo ones.