What is "On star"? Also help needed with built in phone please!

[Joe]

Hi!

I've just bought a facelift Vectra SRi and it has an "On star" headunit with built in phone and I have a couple of questions as I did not get any manuals with the car.

Firstly what is the "on star" side of things and how do I get the bugger to work?

Secondly how does the phone work? I've tried inserting a Vodaphone si card (I've left it as a full size sim not popping it out) and stuck it in all angles and it still says insert sim, I could be way off with it though!

Any help will result in a cold beer for you!

Many thanks,

Joe

[Dom]

http://www.google.com/search?sourcei...2+headunit+gsm

Some interesting reading there

[Joe]

Dom, very helpfull as usual! Totally appreciate that! I googled it and could'nt find anything!