Mac as BlueTooth mic

[David Gluckman]

I have a T68i and a PowerBook G4. I live in a dorm room that gets poor 
reception and I was wondering if it would be possible to use my Mac as 
a sort of BlueTooth headset. This way, I could put my phone in a place 
in the room that gets the best reception and talk on the phone from my 
computer using my built in microphone and speakers/headphone jack.

Any info is greatly appreciated,
David Gluckman