Microsoft had a utility available free a couple months ago that did this. It was call ProvateFolder or something. They took it off their website after system administrators complained about it because it was designed to get around their system security. In other words they were unable to get into this folder on an employee's PC unless they had the password. I have the install for this if anyone is interested. You could also use NTFS permissions and encryption if you are using XP or 2000.