I personally love K/Qemu, it has never eaten a VM of mine like Vbox has done repeatedly. The gold standard for Enterprise is VMWare so if this is for work that is where you want to go. You're going to need a good amount of RAM.. XP has no EULA requirements for aa VM, Visata you must have purchased the "higher" cost versions to legally be able to run in a VM, and Vista does call home. W7 is most likely the same way and will call home. I tired to load W7 with 1.5 GB RAM and 10gb hdd and it would not load for me in VM. Having Linux as the base is a great idea. Any distro can run a VM. If you're going Enterprise.. you want RHEL4/5 SLES 10/11 and CentOS. Hobby wise Debian, Slackware, LFS, Crux and there are others out there just look around Distrowatch. VampirePenguin -- GNUPG validated with key 0xD537A8E1. Questionable validations please verify by phone for authenticity. RTF, TXT, LaTeX, PDF and DJVU files inline or by attachment are gladly accepted. Confidentiality guaranteed only by strong encrypted formats. Windows GNUPG Version: ftp://ftp.gnupg.org/gcrypt/binary/gnupg-w32cli-1.4.10b.exe Bcrypt encryption, all platforms: http://bcrypt.sourceforge.net/ Proudly made by your nearest Mutt and Vim using Linux.