UNLOCK MY HTC G1 FREE

I GOT HTC G1 FROM A FRIEND AND IT'S A T MOBILE WHICH I NEED IT TO BE UNLOCK IN MY COUNTRY JAMAICA BUT DON'T KNOW HOW TO. I GOT THE SITE FROM A FRIEND AND THEY TOLD ME IT WORK FOR THEM SO HERE I AM TRYING OUT TO GET MY PHONE UNLOCK WHICH HE GOT HIS PHONE IT UNLOCK. I HOPE THIS SITE CAN HELP ME OUT THIS WOULD BE GREAT AND WELL APPRECIATED. THIS SITE SEEMS TO BE GOOD AND EASY AND I WILL TELL A FRIEND IF I GOT MY PHONE UNLOCK THIS WILL BE THE ONE OF THE BEST DAY IN MY PHONE HISTORY . THAT'S WHAT I LIKE ABOUT THIS SITE QUICK AND EASY. THE THING I DON'T LIKE IS THE TOO MUCH WRITING AND NOT KNOWING HOW AND WHERE THIS IS GOING TO END UP WHEN I PASS THIS STAGE. MISSING IS THE STEP BY STEP PROCESS. THAT'S MY REVIEW ON WHAT I LIKE AND DON'T