I dual boot. The past week I've used Windows XP more than Linux, just because I don't have things "quite" right under Linux yet. Oh, and I'm using Gentoo for the linux distro.
This document should be all you need. It gives an overview of the current Progranism inner-workings and some other things. It also gives links to samples(I suggest not running them) and the source code:
http://www.cljy.com/~billy/MutatingProgram.htm
The source code there should be recent and working, but only for Windows. I made a Linux port that isn't included there.