Only way the serial might help is if you go to the Police and file a report - that way if they ever do recover the laptop they will have the report with your contact info to get in touch with you (but very unlikely they will ever wind up with the laptop unless the person that stole it gets caught stealing again and happens to still have your laptop in his car !) -- so you're probably out of luck !
ALSO -- I'd cancel any credit cards - change your passwords for online banking - ETC. since you lost something with your account info on it - If you've put the info on the laptop since they now have that info and might get access to it. (Better safe than sorry !)
you can also try and call the vendor and report it stolen. if the thease every call there teck support for help they may red flag it.
Stop spamming the forums about your stolen laptop. Contact the police, not a hardware forum.