Hi, Belkinn manufactures a connection lead for this type of connection in the computer it is called "USB pro series motherboard cable".
It is fitted into the back of your PC it does however takes up one of your expansion slot sites.
I took the moulded connector of their plate and fitted it to the front of my PC to provide a front socket.
Visit the Belkin site at click here and select "manuals and drivers" at the top of the page, then select USB then select Pro series motherboard. This manual gives you the most common computer configurations. There are cheaper versions of this cable around and you should be able to pick up one at your local computer store.