Media Center Controller (MCEC)
MCE Controller provides robust remote control Windows HTPCs (or any PC) over the network. It runs in the background listening on the network (or serial port) for commands. It then translates those commands into actions such as keystrokes, text input, and the starting of programs.
Any remote control, home control system, or application that can send text strings via TCP/IP or a serial port can use MCE Controller to control a Windows PC.