The attached guide will show you how to disassemble your Xbox 360 console.
Tip: You will want to have the XCM Unlock Tool or equivilent case opening tool handy, using household tools will not work and may ruin your console case's finish. These tools can be purchased for about $10-15 at
www.Extreme-Mods.com or any other official XCM retailer.
Notice: ALL XCM brand replacement cases include the XCM 360 Unlock Kit for free. If you did not get one with your official XCM replacement case, please contact your dealer to have one sent to you.
How to disassemble your Xbox 360 -
http://www.teamxcm.com/manuals/disassemble360.zip