I have a very good new PC... AMD Athlon 3.2XP, Jetway V600DAP Motherboard, 512MB RAM, 160GB Hard Drive, G-Force FX 5500 Video Card, Soundblaster Live platinum sound card, 17" AOC LCD Monitor, DVD writer, Broadband etc... it's fast and good with everything except Poser... and I mean Poser...3, 4 and 5.. all three versions cause a system shut down (it works fine for a while!) and "Input not supported" to appear on the monitor... This is my second message on this and I thank those that replied to my first.. since then my PC has been back to the shop and everything updated and tested... I'm at the end of my tether now... Curious Labs don't seem to be bothered replying and I'm at the stage where I think I should take the PC back and demand another one.. I've tried everything..settings, speeds, resolutions, refresh rates!... I can't believe I'm the only person in the world that has this problem! I haven't been able to produce anything on poser for weeks!!... Poser 3 and 4 worked fine on my old PC!.. just very slow! Please help! Frustrated Bob