go to you tube and type in "xbox ring of death "
there are many videos showing step by step how to dismantle and repair your xbox.
Goto to cnet.com and download a free youtube down loader. this will save and let you convert any instruction videos you may need. ebay sell a fixing kit but you will still have to watch a video to show you how.
This will work. The xbox is so simple to take to pieces if you have the correct tools and instruction video from you tube.
You get all the tools required in the repair kit from ebay. Many sellers have them.
It should take you about an hour to fix.
Best of luck although you won't need it......
The Oracle
February 2009