Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.
Here's one way to do it: http://www.brianmadden.com/blogs/guestbloggers/archive/2007/05/07/how-to-automate-the-backup-of-a-sql-server-2005-express-data-store.aspx
I haven't been able to get it to delete old backups though so I have to manually delete them once a week or they eat up my disk space.