Hi,
Just wanted to share this mini project. Used components:
http://www.ghielectronics.com/catalog/product/140 (Robot kit)
http://proto-pic.co.uk/tamiya-70157-universal-plate-set-2pcs/
http://proto-pic.co.uk/tamiya-89918-double-gearbox-kit-clear/
http://www.parallax.com/tabid/768/ProductID/92/Default.aspx (UltraSonic Sensor)
http://www.sparkfun.com/products/8958 (Infrared Sensor)
Greetz,
Colin