Try this. I stumbled across it one day on the Microsoft Support site.
I use it to give Domain Administrators access to Users Folders and Users access to their own folders. It also enables our backup software to access the users folders through the Domain Administrators permission. You should be able to adapt this to your needs.
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q180464
James Harvey, MCP
Memphis Police Department
225 Channel Three DR
Memphis, TN 38103
901 577-1296