If you have a spare computer try,
http://www.microsoft.com/windows/pro...r/default.mspx
It's really easy to setup and automatically back's up as many computers as you have on your network. Plus it doubles as a Storage/Media Server....
It's one of the very few MS products imo that works as advertised (even the restore worked perfectly) and adding more storage was as easy as pluggin in a new USB drive.
-Ian