Mozy is a remote backup tool for Windows that gives you 2GB space to automatically synchronize your folders online. Mozy encrypts data with 448-bit Blowfish encryption, and transfers them using 128-bit SSL, so it's secure. You can schedule daily or weekly backups or you can let the automatic backup happen (Mozy backups your folders only if the computer is idle for a certain number of minutes, by default - 30 minutes).
If you don't have NTFS as a file system, Mozy can't perform backup for opened files, so you might consider closing all the applications while Mozy backups the files.
My only complaint is about restoring files: you can select the files you want to restore online, but the interface is pretty stiff. You're limited to 5 restores a month and you get the restored files by email. It would be nice if you could manage restoring files using the same local client.