Trick to get (almost) free International call on AT&T cellphones

1. Subscribe to Skype, set automatic withdrawal from your credit card
2. Activate Skype To-Go service and select a local number from its list (US)
3. Goto www.att.com/wireless and activate "A-List" feature/service (which is free).  Please remember that this service is only available if you have family plan and/or $60/month or more in monthly bill.
4. Add the Skype To-Go number in A-List
5. Now you're ready to make an international calls for a very cheap from your cellphone.  Just call the Skype To-Go number and follow voice instruction to dial in an international numbers.  You will only pay Skype calls (which is damned cheap, for example to call to Jakarta it's only 4c/minute).  That's it!