The old blue clickers are infrared clickers and will not work for this class:

However, the clickers with the orange circles, like the more modern white clickers, are radio frequency clickers; so these old clickers may work for our class (but no guarantee since the software upgrade in AUG 2008):

To join with this old clicker, try the following:

Turn on the pad, press join,
type in the channel number (33)
and then hit send.

Your clicker should blink red while trying to join; once it is joined, it should blink green.