XOSL (GUI boot) might be a way too, iv not used it in a while, and not tryed yet with vista.
get it here
http://www.ranish.com/part/
http://www.ranish.com/part/xosl115.zip
the original website is no more and i cant find the new one yet.
and heres some screen dumps of how it looks
http://www.ccp14.ac.uk/solution/multiboot/index.html