Couldn’t get the tried and true methods of adding a loopback adapter to work using Windows 7. How do you add legacy hardware? How do you launch the add new hardware wizard for a device that’s not connected?
A quick search took me to http://www.sevenforums.com/network-internet/4166-how-add-ms-loopback-adapter.html
The quick answer: start –> search –> hdwwiz
Press Next, then choose “Install the hardware that I manually select from a list (Advanced)”