I also used Virtualbox and some distros that I could not run on my PC could
run in Virtualbox: Knoppix, Kanotix, ROSLIMS and PCLinuxOS. The window sizes of
Virtualbox were various for the various distros, too big for Slax, for example,
quite big for Knoppix and Damn Small Linux, rather small for Windows XP.
I also ran Windows 7 Black Edition in Virtualbox and tested it at various base
memories, I was amazed and surprised when I saw it working at 256 MB base memory
(slow but still functional). However, I can say Microsoft should re-edit and
sell Windows XP or something similar rather than sell Windows 7. I was
disillusioned by Windows 7.