I have been using P4 for years on my old PC with no serious problems.. it was just annoyingly slow... I now have a much better pc (AMD Athlon 3.2XP, 512mb RAM, 160 GB hard drive and a G-Force FX5500... and an LCD monitor) When I run either P4 (or P5) it suddenly crashes leaving a black screen with the message 'input not supported' floating about, only way out is to re-boot! This can happen after minutes or Poser works for hours and then suddenly goes!... the content doesn't make a difference! I have checked all my monitor resolution settings and they are OK! when Poser works it works well and renders very fast! My PC runs OK with every other program, it is only Poser that does this! Curious Labs haven't responded to my e-mails for help!... can anybody out there help? I am getting seriously frustrated! Bob