Microsoft Private Folder 1.0
 

Microsoft Private Folder 1.0 is a useful tool for you to protect your private data when your friends, colleagues, kids or other people share your PC or account. With this tool, you will get one password protected folder called 'My Private Folder' in your account to save your personal files. Download and have your private folder today!

Get this quick it might not last, MS is thinking of pulling it!
To be honest I thought they had but it's still live.

And it's gone!

But here is another link,

http://www.softpedia.com/get/Securit...e-Folder.shtml