I have a 2002 /3.0 that came with the handsfree (CPT8000). I don't use it and am wondering what I can do? Is this bluetooth? There is a silver box above my cd changer in the rear left panel. Can I connect my Treo? If not, can I do something to make this space more useful?

In case I don't have bluetooth, I can't justify spending $600+ to retrofit bluetooth.