Connect to The Internet from a Windows XP Laptop or Computer Using Bluetooth Mobile phone with GPRS or CDMA
SETUP FOR GSM MOBILE PHONE :
Step1 : Setup of Bluetooth, Mobile phone setup
Make sure Bluetooth have installed in your computer or laptop.
Switch on Bluetooth on your phone.
On computer : Add a new bluetooth device (your mobile phone)
On Control Panel -> Bluetooth Devices- > Add ->
Select 'My device is set up..' and press next to search for device 
If the phone was found after searching for it, the following is displayed...
Note: If you receive the following message...
Check the following:
1- If the phone is switched on and that the bluetooth is enabled.
Check for the ((ยบ)) symbol on the display of the mobile phone. This shows the bluetooth is on.
2- If you are sure that the bluetooth is enabled on the phone, ensure that you have disabled any other 3rd party Bluetooth software - if it was installed as it may conflict with the standard drivers on the system.
Following the next step, after successful detection of the mobile phone, you will be prompted which passkey mechanism to use, select 'Let me choose, my own...' and enter a passkey. In this example I use 0000
After the next step, the phone should now display...
The Nokia will now display...
Pair with?
Press Accept on the phone.
The phone will now display that you should enter the passkey, type in the key that you have selected, for my example it was 0000.
The phone will now display:
Connect with?
Press Accept on phone.
You'll now see some messages displayed on the tasktray (next to clock as the device is installed)
During the installation new COM ports will be added to Windows which are associated with Bluetooth and the communication with the phone. It is important to make a note of the 'Outgoing COM port' as you will have to select it at a later stage. 
In this example we make a note of COM port 3 as we need to select it during the DUN setup.
Back at the Bluetooth devices form, the display will now show the phone and that the passkey is enabled.
Check if the Bluetooth Modem link has been configured.
On Windows XP -> Control panel -> click the 'Phone and Modem Options'->Modems Tab
Notice that a Modem has been installed over the Bluetooth link, the attached com port may differ for your system.
Step 2: Setup of Dial Up Networking (DUN)
On Windows XP , in the Control panel -> select 'Network Connections', then select 'Create a new connection'
Select to use a dial-up modem.
Now only select a single option - the Bluetooth link on the COM port that was installed earlier, in this example it is COM 3, but it may well be different to your computer.
If the link is NOT shown then Click for how to manually add a cellphone serial modem link via bluetooth.
Now enter a name for the dialup
For the phone number use *99#
NOTE: This will instruct the phone to use the default or 1st GPRS profile on your phone. If you have multiple profiles GPRS profiles on your phone and you do not want to use the default profile, the change the phone number to *99*n# and replace the n with number 1-9 of the profile you want to use.
Fill username and password, you must get from your network provider
Decide if you want to make this the default connection or not.
Finally decide if you want to make icon on desktop fro this connection
You are now ready to attempt an internet connection!
The mobile phone will display
'Connect with?'
Accept this
and on Windows XP, you'll see
If all is well you see the following 
Also notice on the mobile phone that the GPRS symbol has changed to G in a frame- this means it's connected!
You are now ready to surf the internet .
Step 3: Setting Extra Initialization Commands”
Tips of setting all above have enough to connect to internet, but some services provider must fill “Extra Initialization Commands”
On Windows XP -> Control panel -> click the 'Phone and Modem Options'-> Modem Tab ->Modem Link -> Properties -> Advanced Tab
Select the Bluetooth modem link and press 'Properties' button. Then on the Advanced Tab of the dialog that is shown, locate the input ''Extra initialization commands".
Enter the following text and press OK
+CGDCONT=1,"IP","internet"
Internet = Access Point Name (APN) GPRS your service provider
Click OK, and close the dialogs, then attempt the DUN again. For this example Start Bar-> Connect To->Nokia 6820.
SETUP FOR CDMA MOBILE PHONE
We can to apply this setting modem for some GSM phones supported Bluetooth. If we want to apply this setting modem for CDMA phone, there are some differences :
1. Dial up phone number *99# on the GSM phone modem setting change with #777 if you want to apply for CDMA phone modem.
2. ''Extra initialization commands" on the GSM phone modem setting we use +CGDCONT=1,"IP","internet" we must to change with : AT+CRM=1;+CSO=33 if you want to apply for CDMA phone modem.
