I recently stumbled across this free app, available on the App Store, which is designed to work as a remote control for Windows Media Center on Windows Vista and Windows 7.
The app works over wi-fi, so you’ll need a wi-fi connection for it to work. You’ll also need to download the Mediamote server from here and install the software.
Once it is installed, simply run the Mediamote app from your iPod Touch or iPhone, select the PC that it is installed on and then you are good to go.
Now it is up and running, you’ll see that the app has some quite concise options that allow you to control most aspects of Media Center.
When I tried this with the Windows 7 Media Center, I was very pleased at how quickly it worked and how all of the buttons worked properly.
I would recommend this to anyone who can’t afford to shed out of a new Media Center remote but would like something simple and easy to use.