Our Tips Editor Vic says "In a previous tip I showed a method for safely
moving certain personal folders. In this tip I will show a general but simple
way to move programs or other folders and files while maintaining all the
original references. In fact, you can make it appear that your folder or file
is still on the C:\ drive when it has actually been moved to another drive or
partition. Moreover, you will be able to access or even edit the object from
either place although there is only one copy."
http://www.techsupportalert.com/content/nifty-way-safely-move-folders-or-programs-another-drive-or-partition-windows-7.htm