Will be getting a new Dell PC soon with Windows Vista preloaded on it (Doubt
if it will come with a Vista installation CD). What I want to know is if I
can easily install Windows XP and leave the Vista intact and just chose at
startup of PC whether to use Vista or XP? - I think they call it dual
booting isn't it?

But I don't really want to go formatting and partitioning the hard drive if
I can avoid it to do this.

Many thanks,

Andy.