How to setup Dial-Up Networking (DUN) on Windows for tethering
For Windows XP go to the Control Panel and select Network Connections, In the network task box select Create a New Connection In the wizard pop-up select Next, Select connect to the Internet and press Next, Select Set up my connection manually and press Next, Select Connect using a dialup modem and press Next, Check modem – standard modem (COM4) and press Next Enter Verizon Wireless for the ISP Name and press Next Type “#777 in phone number field and press Next, Select Anyone’s use and press Next, Leave all blanks in Internet Account Information and press Next, Check Add a Shortcut to My Desktop and press Finish. Go to Network Connections, select Verizon Wireless Leave User name and password blank and press Dial. The setup is complete.
Note: The latest Desktop Manager must be installed on the PC for DUN to work.