Amieres built a IR controlled Helicopter with Wiimote using USB IR Toy V1. A camera connected to the laptop tracks the helicopter. Using the USB IR Toy the laptop sends automatic altitude control signals. Setting attitude points is done with Wiimote’s up/down buttons, while nunchuk joystick is used for motion control.
Via the comments.
You can get IR Toy v2 for $22.05, including world wide shipping.