Stolen iPad , how to IMEI block or track it?

Hi, Apologise if I posted this in the wrong section. But my iPad and Macbook Pro have recently been stolen. I've reported the event to the police, all I have left is the iPad box with it's IMEI number. The Police have asked me to call my carrier or Apple for assistance in tracking my iPad so that they can allocate and return my stolen items "over $7000+". iPad is my only hope left.

I've been reading about lost/stolen iPad, I've called my carrier and requested an IMEI block, but all they did was disable the service associated with the microsim. Police also asked me to call Apple in regard to this matter, but as I read through topics of topics of lost iPhone/iPad. It seems that either Apple really do not have the ability to track it down or they do not want to do so. MobileMe seems to be the only way.

I had location service on when it was stolen, but I am afraid they have done a restore with itune or changed the microsim. I wish to ask if Apple can help or not in this matter, if they do, which department should I contact? If they won't help, can I do a IMEI block on the device at the very least? Thank you for any advices and ideas!

Any ideas or advice will be greatly appreciated. Thank you in advance.