Bloodsong, Your machine probably even beats mine for being a minimum. I'm running an AMD K6-III+ 450Mhz with 256Mb of RAM. I've had the usual bugs but no major crashes (occasionally Poser just exits for no apparent reason and I'm seeing some C exception errors). This machine benchmarks the same as a 600Mhz Celeron but P5 is a pretty blocky on it and I suspect some people's "problems" are due to not waiting for it. The program seems to snaffle cycles away from its own screen updates to the point where it appears (even to Task Manager) to lock up. In this case "Not responding" is a temporary condition and, if you wait long enough it will often remedy itself. It would be better to expend a bit of CPU resources on keeping the user updated as to what is going on, especially since the screen just sort of blanks and doesn't update for several minutes sometimes. This is especially noticeable on long renders and it's a memory pig if you try to use shadow maps on a lot of lights. I think my dream system for it would be about a 3.6Ghz dual Pentium 5 with 4Gb of 1Ghz ram (which should be available by the time I can afford it!)