I have never tried this. As a Linux and Mac user I am utterly disgusted, but alas, from what I remember of dual with winxp you need to install both versions of windows first, then do linux last. The reason is Grub is much more flexable and you can add in the windows parts fairly easy. I can't remember the syntax off the top of my head, but Gentoo shows howt to do it. Here is a link:
http://www.gentoo.org/doc/en/handboo...part=1&chap=10