We are maintaining an up-do-date placemarks, boundary informations and other information in kmz file format at our servers.
You can use Google Earth to view these. Follow these steps to get going.
Step 1. Start Google Earth, if you don't have it already installed you can download it from http://earth.google.com/download-earth.html
Step 2. Go to Add>Network Link.
Step 3. In the Name Field "Bahria Town Pakistan"
Step 4: In the Link Field type: "http://www.bahriatown.com/bt_pk.kml"
Step 5: Press OK, and you should see a Bahria Town Pakistan Folder in the Places Tab.