When I ran Windows 2000 Pro (for a few months), sometimes I got an error saying there was insufficient disk space to render at this resolution. I had a 30GB hard drive with tons of free space! That seems to be a fluke between Windows 2000 and Poser. I got that message once with Windows XP, and only once. I cleaned out the recycle bin, my temp and temporary internet files, then I ran Norton Speed Disk (similar to defrag). The problem went away. The problem was not Windows XP. It was a Poser problem. Ron