Jim - although I don't know for sure as I haven't moved all of my stuff over (do run the compatibility checker first), I think everything on my system is doing ok with XP so you should be ok going up without dual boot - Ted

I also have a dell 530 with lots of ram and lots of disk space and was running win 2000 pro and had the same problems, if I was tricky I could render at 2400 x whatever, but not above and lots of steps to get that, same messages as you show and no amount of moving temp files or switching virtual got me above that - I finally cleared out my second disk drive and installed Win xp pro on it as a dual boot and then installed poser 4.0 and then upgraded to 4.0.3 and then added pro pack and my problems are solved - I tried renders after 4.0.3 and they worked also so pro pack is not necessary - I now let win xp control my virtual/page file and can render at 4090 x 3270 and everything is ok again - if you have a separate partition and/or seaparte drive, win xp (I had an OEM version so I don't know about an upgrade) will go do a dual boot and not have any problems - this really solved a vexing problem for me - Ted

I have the same problem - too much virtual ram - your page file size greater than 3 gb and poser freaks - every time or two I render a large scene, I have to increase the page file / virtual size to get a render without running out of disk space (which is what poser says when it gets lost and can't see all the ram and page file even though it is not using all of it) - after I go above 3 gb virtual / page file size, reloading poser gives exactly what you are seeing - if I don't reload poser, it will go on up to 4.095 which is where Win 2000 tops out - if I drop the page file size (go to settings, control panel, system, advanced, performance, etc and reset to below 3000) and reboot to have it take effect - the problem goes away - quirky but can be worked around - I got into this recently when I bought a new high-end computer - I am trying to get poser to fix the bug but haven't got them to yet - Ted