Just kidding. Do you know if your laptop have any anti-thef feature in it?
If not, then the only thing you can do is to contact the police and report it stolen. Provide the laptop serial number if you know it, that way pawner will know. But your chance of recovery is low. You report to police is really to stop identity thief. Also, change password of email, bank, online game account etc. But don't give up hope. I know because I lost mine before as well but the cleaner at the shopping mall returned it to the local police station.
The only secure way to protect a laptop is to run the bitlocker service in Win-7, which keeps the drive encrypted without your psd. Most all other "higher" levels of security can be broken by simply taking the hard drive out of the laptop, or given enough time to crack a password.
Look at all the govt accounts and bank information that has been lifted by just removing an employee's laptop from their car!
The TMP chip built into some laptops is a good start but, you'd think a simple GPS system, like in many cars, and iPhones, could be built in to track em down. I agree with Pyree, a police report is a good baseline, should credit items or ID theft become an issue.