Welcome to the forums :smileyhappy:

You can indeed install XP.

There's actually a 'Step-by-step guide for installing Windows XP on Dell XPS M1530' guide on the Notebook Review forums, which you may find useful?

There's also a (very long) thread on the subject on these forums - here. , which includes links to the drivers you'll need

Alternatively... you'll find a link to all the XP drivers you need here - courtesy of Udi ;)