Searched, couldnt find anything that legitimately works without warden sniffing you, but as anyone who uses a 64 bit OS cant use glider "safely". Gliders forums suggest that you revert or try to work out dual booting, but offer no advice from there.
so just sharing a link I found in my own efforts that was extremely helpful and simple to use, even for people who don't know much about working in Dos or much about OS's.
How to dual boot Vista and XP (with Vista installed first) -- the step-by-step guide with screenshots
will clear the thread out if someone finds this to be a repost, even though i couldn't.
the biggest downfall of this is you need XP disks if you don't already have some laying around.