I've got dropbox installed on my home pc and I've got it installed on my school laptop and it keeps my work files in sync between the two. When I create or change a document at home it automatically copies across to my creaky old school laptop. To top it off there is a copy in the internet and if you accidentally delete that worksheet you spent hours creating, log onto the dropbox website and recover it (they keep deleted versions for weeks before wiping them permanently). I wish I'd started using this years ago! Sign up with this link and get extra free space when you sign up.