Hi Fareed53, and welcome to Laptop GPS World. As Nine said, you may pay an unreasonable premium to buy a laptop with a built-in GPS receiver/antenna today (2009). Hopefully this will change soon, but for the time being only expensive models include such functionality. Very recently a handful of GPS-enabled netbook models were announced, and also some small UMPCs with integrated GPS receivers.
A GPS functionality can be added for only about $50 to any laptop PC by buying either a USB GPS receiver or a Bluetooth GPS receiver.