I've been clunking along for several years now on my hand built PIII 1GHZ. 128meg ram system. It runs great and never gives me a bit of trouble. But My 3D models are getting more and more complex, and the system can't handle them anymore. Poser5 was a complete sled and totally unuseable. I happened to be in the computer store the other day looking for a new monitor. And there was a new SONY VAIO sitting on the opened item sale shelf for $700.00. So I snaged it. The thing it loaded to the gills: 3.2GHZ P4 800 MHZ bus 512meg ram 128 meg vid card with t.v. in's and out's 120gig 7200rpm HD Firewire,network,memory card reader, Flash card reader, DVD re-writable drives......etc,etc. The thing has everything but the kitchen sink. ;-) Anyway. I installed Poser5 on it. And now not only does it run smoothly, but I can actually render hair and use the cloth system now. 8-] You should be pretty happy with Poser5 once you break past the 3ghz. CPU barrier. -ScottA