I've got a little shuttle PC - 512MB RAM, Celeron 2.4Ghz Processor, Radeon 9200 64MB(cheapest I could get with DVI) and a TV card hooked up to a Sagem Axium telly. I am struggling to playback hi definition files with acceptable performance. Some will play ok, most are j-i-t-t-e-r-y especially with sound breaking up. Messed around with codecs tills come come home with only marginal improvement. Recording 'High Quality MPEG2' with the PVR software produces glitchy playback too. Where is my weak link - crappy video card ? Surely the CPU and system bus is fast enough?