Solved! Stolen laptop

Solution
It's almost impossible, but here's article can may help:

http://www.ehow.com/how_4586129_track-laptops-_mac-ip-address.html


While, I don't have it installed on my ThinkPad T40 from 2003, there is a open source software that you install in your next laptop to help you track it down if stolen. That is if you decide to buy another laptop.

http://preyproject.com/


Sorry, but trying to find you laptop is going to be much harder than finding the proverbial "needle in a haystack".
It's almost impossible, but here's article can may help:

http://www.ehow.com/how_4586129_track-laptops-_mac-ip-address.html


While, I don't have it installed on my ThinkPad T40 from 2003, there is a open source software that you install in your next laptop to help you track it down if stolen. That is if you decide to buy another laptop.

http://preyproject.com/


Sorry, but trying to find you laptop is going to be much harder than finding the proverbial "needle in a haystack".
 
Solution
Unless the person is just a complete dummy, even the software will not help. Not much you can do except report it and hope it turns up at a local pawn shop somewhere or they recover it in a bust. Even then, unless you have a lot of documentation, or the laptop has not been wiped clean, it will be hard to prove it's yours.
Basically, very sorry for your bad luck, but it's pretty much gone. Take better care of it next time.