"1. First, test your digicam. point your TV(or any Infrared) remote controller at your digicam, press the remote(any button), view through your LCD preview or snap a image if you use DSLR. If you can see your remote's bulb lighted(usually in light pink), then your digicam is able to do IR shoot."
or search the google.
Think i remember a few CSers are using A300 for their IR photography.