My laptop wont start up...

Hmmm, for my laptop, it didnt come with the vista disc as it was built in or something along those lines (as in they have options to restore to factory setting, etc.) but the Dell XPS that nexon gave me did come with a vista installation disc for if I wanted to "upgrade" my Windows XP on it into Vista...Would that work?

it might assuming they're the same version

e.g. Home Premium and what not