Microsoft sent me the box to send my Xbox 360 in for repair but i do not see a return address includ

Does anyone happen to know Microsoft's return address or how I can get a hold of that slip...?

Microsoft sent me the box to send my Xbox 360 in for repair but i do not see a return address included. Help?adware

THey should know by the serial # if you had it registered; or put your name and addresss on the box and in the box.