Thanks for the response! I'm using an NVIDIA RIVA TNT2 Model 64 Pro video card, and the driver is the latest available. I defrag on a weekly basis (or anytime the system hangs up, just in case). Worms I'll have to check for, but I don't think so. I do a search for all *.tmp files on a regular basis and delete them. I have 90% of a 120 Gig HD available at present. The place that installed the new HD+RAM did a thorough cleaning of the inside of my case. Did a completely clean install of Poser+latest service release...twice. I even saw that Poser 5 has a problem with part of the Win XP SR2 that protects against possible virus intrusions, and disabled this for Poser only (and since I uninstalled the Content Room, I don't go online with Poser anyway.) I'm beginning to think Poser 6 is my only hope. Anyone know how much functionality there is with the demo that's posted? Thanks again!