I have been running Poser 4 on a WinNT box...no problems. My new W2K box with a gig of RAM refuses to run Poser 4 or Painter 6. Both Bryce 4 and Carrara run fine as does Photo shop 6. Both Poser and Painter error messages say "not enough memory" and then shut down. This is a new DELL 620 workstation and everything else is excellent. Weird! Dennis