I've done it too for my half-dead video card that kept giving a No signal input after a few seconds of starting the machine. It worked wonders and now I can stick with it until I upgrade to a new system that I wanted to do anyway in a few months... BUT NOT NOW.
Here's a *short* video I made if anyone wants to see the process: http://www.youtube.com/watch?v=R7jUqoKVY-k