CellGPS sends the location of the mobile phone to a webserver (gsm cell identifier or GPS information).
It connects automatically to the server using a predefined GPRS connection, at predefined time periods.
A Bluetooth-capable GPS device is required if you want to send GPS information (e.g. EMTEC Bluetooth GPS, or Fortuna Bluetooth GPS, etc.).

How to connect to the GPS device:

A Bluetooth-capable device is required. In Settings, switch to upload GPS data, and restart the program.
At the first time, the scan for Bluetooth devices starts. After selecting the appropiate device, the phone connects to it, and begins to receive location information. If the device is not paired, then it will ask for the Bluetooth code.
After the first time, the phone will automatically look for this GPS device. No matter if the device goes out of range, it will connect to it again automatically.
The received location information is displayed below the cell id and signal strength. It is displayed with red when the information is not valid (the GPS device is not in range, or the current location is not determinable).

How can I intergrate it?

You should built your own server. CellGPS calls a http page using these special parameters:
   www.ourserver.com/gps.php?imei=351112222233333&cell=12345&area=12345
or
   www.ourserver.com/gps.php?imei=351112222233333&lat=471010.58N&long=0194512.12&heading=13.1&speed=45.4
Of course, other scripting languages can be used.

If you want to use gsm cells, CellPos would be a helpful program to record the positions of gsm cells.