Gmail Drive Shell Extension

GMail Drive is a Shell Namespace Extension that creates a virtual filesystem around your Google Gmail account, allowing you to use Gmail as a storage medium. GMail Drive creates a virtual filesystem on top of your Google Gmail account and enables you to save and retrieve files stored on your Gmail account directly from inside Windows Explorer. GMail Drive literally adds a new drive to your computer under the My Computer folder, where you can create new folders, copy and perform any file function.

http://www.viksoe.dk/code/gmail.htm

Reduced Permissions

Run Internet Explorer (IE) in a reduced permissions sandbox. 'Reduced Permissions' removes the administrator, and power user groups from IE. Note that this program currently does not work on Windows 2003 due to an MS update.

http://www.intelliadmin.com/Utilities.htm