I'd like to put together an inexpensive PVR. I have an HP Thin Client model T5710 with 1.2 Ghz processor, 512 MB (flash) harddrive and 512 MB RAM. Full specs http://h10010.www1.hp.com/wwpc/in/en/sm/WF06b/12454-12454-321959-89307-89307-439748-470263.html
I have the PCI expansion kit so the T5710 will take a PCI card. I'd use a USB external harddrive (I believe it's USB2) to store the video files.
The Win-TV 150 card should do the trick though I haven't found one yet. The Win-TV 150 card needs a minimum 733 Mhz processor which the T5710 seems to satisfy. The T5710 has 16 MB video memory, not sure if that's a limitation. My understanding is the Win-TV 150 card does virtually all the processing so little needs to done by the T5710.
The advantage of the HP thin clients is they are very small, quiet, and draw little power compared to a regular PC tower.
I saw Heemsker's post about broken up video on playback but no reply so don't know if s/he resolved the problem. http://www.shspvr.com/smf/index.php?topic=11409.0
Thanks for any guidance on whether its even worthwhile to pursue this project.