Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Apple does NOT have a stolen computer database and isn't in the business to help track down and deal with stolen property. I have seen many computers and iPod's as stolen but I can't do anything but support the product.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.