Multiple Operating Systems

Last night I saw a guy on TechTV Screen savers demonstrate a program
called XOSL at http://www.xosl.org/. The guy had 39 operating systems
installed. He mentioned that it was far better than LILO and best of all
it was free.
After thinking about it I thought this might be a good solution for
those that want/need multiple operating systems and may be just what I
need so I can run windows XP, windows 98SE, DOS and Linux all off the
same box.
Here is the link to the on line article
http://www.techtv.com/screensavers/answerstips/story/0,24330,3399433,00.
html
Enjoy
Dan