Check this out:

In a nutshell, control anything electric with your iPhone. TV, lights, sound system. That's about it actually, but still. I think it's something I need in my life.

So how the fuck does it work? What exactly do I need to make it work in my house and how much will it cost me?

I get the iPhone to PC bit, but it's the PC to lights bit that confuses me??

http://www.everythingicafe.com/forum/iphone-apps-and-games/iphone-remote-control-for-tv-anyone-know-38718-2.html

http://melloware.com/