Intel has released two new Media Series motherboards: DG33TL and DP35DP, including important new features to a Media Center PC, like Consumer IR receiver and emitter (via internal headers) 100% compatible with Vista Media Center. Now we just need to buy a Microsoft Remote Control (for XBOX 360) and build the dongles for the IR Receiver, Learn Mode and Emitter. I'm asking Intel about some sample circuits but they only releases this informations for Registered integrators.

DP35DP (ATX) DG33TL (ATX-mini)

For more information, visit this site:
http://www.intel.com/products/desktop/motherboard/media.htm?iid=mbd_main+media