AMC 96 TE Magna

Ive got a Car Pc and a Sony Ericsson K700i

basically i want to use my Pc as a bluetooth thingymabob

so when i get a call it will come up on the screen with answer yes / no and then cut out my other music so i can talk
then i can just use my pc as my phone etc.

if i wanna call someone i can just go to the program and scroll through the phone book on my phone but through the computer and call them.

I have bluetooth on my phone and a bluetooth module on my computer so they can connect.

Is there any software that does this or something very similair ???