How to setup ASTBILL for Calling Card Service after installation

I have installed ASTBILL LiveCD on my HDD. What do I need to do to configure an incoming DID number so that it will prompt me to enter PIN number or announce the amount I have using CID, and then ask for destination number?

Please, I would like a step by step procedure on how to achieve this. I already have a trunk provider for the outgoing calls.

Thanks.