Actually - if you are using Windows XP by any chance - there's a utility that lets you copy all of your files/settings from one computer to another.
I believe it copies email, browser settings, everything in your desktop and "My Documents" folder and a bunch of stuff.
You can effectively use this as a backup - provided you have all of your stuff in there.
Alternatively - drop $300 for a small Network Storage device with RAID. They are pretty reliable - and back up everything to it with software. Take it home with you at night.
Better yet - buy two and switch them back and forth.
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