Using Alternate Dialup Numbers

With version 2, in the past, after installing, scanning applications, and rebooting, I have dialed up using my main number. The firewall has worked fine. However, sometimes I can get a better connection by using an alternate number from a list in dialup properties. After trying another number, clicking on my browser, and ready to head out into cyberworld, I find the firewall will not allow me to surf to any sites. What do I need to do in order to use alternate dialup numbers? I am about to try the new version 3.

                                                                                                                       Thanks for help,