Hi,
Have you seen www.ubuntu.com and www.kubuntu.com ------------- they
are very easy to install LINUX's and probably will run on top of
Windows XP too.
Today I installed virtual box from Sun (free).
You can also run UBUNTU / KUBUNTU probably from Windows XP itself and
it will run (I think) on top of Windows itself ------------ otherwise
just use the virtualizer from www.virtualbox.org
Will allow you to run obsolete versions of Windows without having to
upgrade your application software.
Erach