QUOTE (hawaiianlungs @ Apr 13 2008, 08:09 PM)
I did, but it did not answer the question
Really....
QUOTE ("VISTA FAQ")
VISTA FAQ Entry
[SNIP] You can boot your Vista system with UBCD4Win but use caution. First, if you used 2k3 as your "source" to build UBCD4Win do NOT use that CD on a Vista system it will damage the Vista restore points. There have been a few bad reports with other Bart PE based boot CD's, but the cause of the problem has been a few incompatible tools (mostly registry restore software). By default there are no programs know to cause damage to a Vista system when UBCD4Win is booted on it. Still please use caution with Vista systems.
Sounds like that answered your question... Use caution when using your XP based UBCD4Win on Vista as it MAY cause issues. It may not but the possability is always there especially with some of the tools that are included in the build.