Virtual Drive Creator is system directory modification tool. It allows you to map certain folders to drive letters for easy access. In other words, the application assigns a drive letter to any folder on your system. This folder will appear as another hard drive if you look in "My Computer".
Virtual Drive Creator is very lightweight. It installs instantly and it is ready to go. Setting up a virtual drive is very easy. When you launch the app, you will see a list of drive letters in use (A:, C:, D:, etc.), then in the middle, you will see a browser and to the right a list of drive letters available. Simply find the folder that you want to create a virtual drive for, select the letter you want to assign it and click on "Add Virtual Drive". The operation is instantaneous and it should last as long as you don't restart your system.
There are two version of Virtual Drive Creator. The only difference is that the Pro version manages to create permanent virtual drives, whereas the free one can only test to see if this feature is possible to achieve with your system.