Pc Tools Desktop Maestro What Happens To XP When I Install Vista?

What happens to XP when I install Vista? - pc tools desktop maestro

I currently use Windows XP Service Pack 3 of 32 bits. My father has Vista Ultimate x86 (32 bit). Of course, I would like to check, but the reviews are from Vista, I am worried what will happen if I do not want to come back and want. Vista will replace my XP? Can I run a System Restore Point (I my master PC Tools Desktop "back for this program) and to remove it this way?" I still install my XP installation CD on Windows Vista, and it would be better if I just want to reinstall XP? My father also mentioned something) on a dual-boot or something, but I do not understand (too much credit. Each proposal, suggestions or ideas?