wbadmin is what 2008 backup actually uses. You can script and schedule backups, and individual folders.
For example: wbadmin start backup -backuptarget:b: -include:c:\folderyouwanttobackup
http://technet.microsoft.com/en-us/m.../dd767786.aspx and http://technet.microsoft.com/en-us/l...8WS.10%29.aspx