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One of the great things about having a blackberry is the ability to stay connected.  Usually that means getting e-mails, using GPS, and surfing the internet from your phone to get information.  However, there are also times you really need to be able to use your computer to access information.  For these times, it is useful to tether your blackberry curve to your PC and allow it to be a modem to connect your pc to the internet. 

I am an ATT/cingular customer with a blackberry curver.  I was able to successfully do this by installing the latest blackberry software on my computer.  The installation includes the necessary modem driver.

1. Start Blackberry Desktop Manager and it should be running in the background.  This is required to use the Blackberry as an external modem
2. Connect the blackberry to the computer using an USB cable
3. Change the modem setting associated with the Blackberry “modem” by going to the control panel and clicking on the Phones and Modems icon.   Then click the Modem tab, selected the standard modem and click properties and then Advanced.  For my AT&T phone/service, I had to add the following +cgdcont=1,”IP”,”wap.cingular” in the extra settings area.
4. Now that the modem setting are set, you must create an new connection using that modem.  To do that, go to the Start -> Connect To -> Show all connection -> create a new connection.  Choose the “Manually connect to a wireless network” option.  Select “connect using a dial-up modem.  Check only the Standard Modem (if prompted).  Give the connection a name such as “My BlackBerry Connection”.  For the Phone number, I had to put in *99# since my wireless carrier was AT&T.  The username and password are left blank for AT&T.
5. Also…
   • Clear all check boxes (”Use…when anyone…” and “Make this the default…”)
   • Click FinishMake sure under TCP/IP Properties (Advanced) “Use IP Header Compression” checkbox is unchecked. To verify this, do these steps:
   • Start Menu->Network Connections->”My BlackBerry Connection”
   • Click Properties Button
   • Click Networking Tab
   • Select “Internet Protocol (TCP/IP)”
   • Click Properties Button
   • Click Advanced… Button
   • Un-check “Use IP header compression” checkbox
   • Click OK until all windows are closed.Uncheck all the following check boxes, if you see any of these checked:
   • Turn off “Enable Hardware Flow Control”
   • Turn off “Enable Modem Error Control”
   • Turn off “Enable Modem Compression
6. Finally, click on the “BB Modem” icon via Start Menu->Network Connections. start using Internet from your Blackberry.