For Vista and XP on the same machine..
These links should help
VistaBoot Pro
http://www.vistabootpro.org/index.php
http://www.pro-networks.org/forum/viewtopic.php?t=88231
EasyBCD
http://neosmart.net/gallery/v/neosmart/EasyBCD/1_50/
Read this about System Restore
http://bertk.mvps.org/html/dualboot.html
Other dual booting articles:
http://apcmag.com/5485/dualbooting_vista_and_xp
http://support.microsoft.com/kb/919529
"heather" <(E-Mail Removed)> wrote in message news:A0C612C7-7737-4CC3-8960-(E-Mail Removed)...
: Hi; I have PC with preinstalled Vista Ultimate; am going to set up dual boot
: on this PC with either Ubuntu or XP. What I also want to do is run ANOTHER PC
: with either XP/Ubuntu FROM my Vista PC - is this doable? I have lots of apps
: that only run under XP (currently on a ghosted USB HDD) I can access the docs
: etc, but not the apps (ie Photoshop). I can triple boot (got heaps of space),
: but have got a spare box doing nothing...