Running an AMD XP2400 (2.0GHZ)CPU, 1GB DDR PC2100 2.5 Latency RAM, 30 GB C: Operating System and Base programs, 30 GB D: (Poser 4 and Poser 5) Installed here separate Runtimes, 30 GB E: (Swap File, System Managed) and backups of downloaded zip files, was NVidia 32 MB Video card-Now ATI Evil Commando2 128 MB video card, Windows XP SP1, Blank Screen Saver. Sorry, don't do animations yet will tackle that after I finish RHPS characters. Two days on SR4 no crashes, 2 crashes before that rendering under SR3 and P5 in a month, 12 Crashes under P4 in a month before that.