I Installed a Sprint Mobile USB Modem "Sierra Wireless Compass 597" into a Latitude D600, it works fine and all, but as soon as I connect to my VPN it disconnects the air card.I try disabling the windows firewall to see if that work but it failed, what can I do?

You must be kidding me 33 views and no one has a clue????????

Hi, Based on the current situation, please try the following: 1. Install the latest device driver for the Mobile USB Modem. http://www.nextel.com/en/software_downloads/mobile_broadband/sierra_compass_597.shtml 2. Please also contact Sprint or Sierra Wireless Support for more information. If the issue persists, Please collect the following information: 1. Please check if the event log to see if there are any related error messages. 2. Please run CMD and then route print to export the route table and post the information to this thread. Thanks!

Thanks will try that and see what happens