The asus P5N7A-VM motherboard seems a good candidate, is its integrated 9300 graphics powerful enough for good deinterlacing?
Mmmh, I hate to reply to my own message, but it seems it isn't available anywhere, at least here in Spain :-(
I'm just at the same task at the moment.
Vdpau enabled IGP motherboards except ION systems seem not to be available at all for some reason.
Same for passive Nvidia GT220 cards (not yet available (Zotac Zone Edition or ECS)).
agree
П210 or Gt220 or new ION2 can be good choice
Goga