I use Carbonite.com to back up everything on my laptop automatically. Not bad security for less than $50/year, and it's easy to use. For a free 15-day trial, click here.
Full disclosure: Your using this link means that *if* you decide to subscribe to them, we'll both get a bit of free service from them in thanks.
I hope you never need your backed-up files. But at least they'll be there. :o)