Go to Xbox.com, sign in, click on Support, choose 360, then on the left side click on "Repair your console." Enter the serial number on the back of your 360. It might say "Standard Warranty Expired", but ignore that. Click on Repair Console, choose "3 red lights" as your problem. Then fill out your address and all that. I clicked on "Standard Shipping". With this, they sent me a box and a label within a few days. It had all the stuff I needed to wrap up and secure my 360. Then I put the 360 in the box, applied the label, and shipped it off. They repair it and send it back. At least, they will. I haven't got mine back yet. I'm pretty sure that was the order of the steps... It's been a few days since I did this now.