Windows Backup is a very straightforward timed backup solution for a connected drive - much like Chronosync. If you want to use it with a network drive you have to have the most expensive version of Windows though for some reason!

Backup will also do a system backup and restore too if you want it. Bit like SuperDuper in a very rudimentary fashion. And to get the full image backup features, like Norton Ghost, you also need one of those more expensive versions of Windows, which seems overkill to me. Most Windows machines come with a restore partition these days anyway (which will take you back to day 1 of course).

http://www.microsoft.com/windows/windows-vista/features/backup.aspx