Infrared Proximity Sensor

Could I use one of these: http://www.sparkfun.com/products/8959 with arduino? If so, how. Thanks, Jack

Simplistically, yes. Connect Arduino 5V to Vcc, gnd to gnd and Vo to an analog pin. Use analogread to get the voltage on that pin, perform a little math to get distance. As to whether it's suitable for the application you have in mind, hard to say.