When I ran Poser 4.03 in Win98SE, I had only 1 GB physical RAM. I also had a fixed 1 GB swap file in a separate partition on a different hdd. This made 2 GB of Total memory. So I needed the large memory patch for Poser 4.03. No problems. I recommend using the patch, even in Win2000 Pro. I now use W2K Pro with 1.5 GB physical and the recommended min and max for the page file (which is on another partition and hdd). I just got the Pro Pack and Carrara Studio 3 on Friday, so I can't say how PP will behave with the 'large' memory amount (it took over my Poser 4.03). I also have Poser 5 which doesn't seem to have the same issue (latest service release). Now all I need to get, is Transposer.