Hi Patricia, Maybe I am wrong in this, but my experience with Windows emulator programs (specifically Virtual PC 3, 4, and 5) is that they are slow, slow, slow. THey have all the disadvantages of working in a PC environment with significant disadvantages added in. I understand that VPC, and presumably programs like it, can be useful for situations in which one MUST run things like MS Access, or if one is sending MS Office files to old PCs running early versions of Windows (95, 98, etc) with old versions of MS Ofiice (97, or earlier). VPC can also be used if one is building websites and one wants to see how they will be drawn on different computers using older browsers etc. The point is, is that in my experience, VPC absolutely stinks when it can to anything even remotely multimedia. I found its performance using QuickTime movies for example to be really terrible, and this is on a G4 PowerBook maxed out on RAM. I guess I don't know for certain, but I would bet that running a Windows based fractal generator in the VPC shell would be awful. Does anyone have first hand experience with this? I would like to be wrong about this--I have VPC5 and I would be happy to upgrade that to version 6 if I had some reason to think I could run Ultrafractal...