I know this is possible, but i don't know how to do it.

How can i get my address book to use bluetooth with my phone so i can send/receive messages?

it can also give me a warning message whenever i'm receving a phone call. like i said, i know this is possible i just don't know how to get it to work

i'm running a Powerbook G4 with mac OSX leopard (10.5.2)