setting up shadow copy of folders to enable previous versions for users

One thing added to Windows 2003 was "previous versions" which allows users to retrieve old copies of files on network shares that they had deleted or saved over. In the old days, you had to go to backup (and still do if you haven't set up shadow copies on your network shares - which is not done by default).

Here's a good page on enabling shadow copies on network:

http://www.ucertify.com/article/how-to-enabledisable-the-shadow-copy-of-shared-folders-feature-of-windows.html