If you still have the package, it should have a set of serial numbers. One will read "IMEI" - that's the number you need. Call your wireless provider and tell them your phone has been stolen, give them the IMEI number. They can track it for you and will alert the police. Alternatively you could just call the cops yourself.
The thing wit iphones is that they have to be on to track and even then it's not like an Android phone.
One thing you can do is visit this web page and register your phone's imei and anyu other info that you have.
This thread is almost a month old. OP has only made one post and never came back to reply to this - I'm going to close this as trying to help at this point is essentially a waste of your time.
Not trying to be rude, just trying to clarify the situation. Thanks for trying to help anyways, HardwareWhore - please check the dates on posts from now on though as to not revive dead topics and clutter the forums.