I've been experimenting with running Virtual PC 4.3 under XP to find out whether or not I'd be able to make full use of my Pentium4 2 GHz/512 MB RAM machine to accelerate Fractint fractal calculations. Having applied the makefcfg utility to sort out possible VESA problems with my NVidia GeForce4 MX 460 graphics card, I have been able to generate the following resolutions for Fractint (running under DOS under Virtual PC under Windows XP): 640x400x256 640x480x256 800x600x256 1024x768x256 1280x1024x256 With lower or higher resolutions (specified by makefcfg in my fractint.cfg), Virtual PC hung up. I also managed to generate the above resolutions for true colour modes. So, yes, as far as video modes are concerned Virtual PC might be a way to work around the XP limitations. But, there is a but - at least for me. Even calculations of 640x480x256 fractals turned out to be considerably slower than on my Pentium III 700 and 800 MHz PCs. Maybe, there is a way to reconfigure DOS under Virtual PC. I have applied old autoexec.bat and config.sys values from way back when I was really still using DOS, but could not achieve any signficant accelerations. That's why I have given up on trying to run the current Fractint DOS version under XP on my 2 GHz machine. I've decided to wait and hope and pray for the Windows version. Otherwise I'm fine with Fractint on my other PCs (running Windows 98 and ME). Hans-Joachim PS: Something else comes to mind while reporting these experiences with Virtual PC. Has anyone ever tried VMware Workstation? Since it is a virtual machine software letting you run multiple operating systems (like, for instance, Windows and Linux) on a single piece of hardware, maybe it is more useful for running Fractint on modern machines than Virtual PC is.