It usually does not take more than a few seconds to get on the internet. If it waits at the screen for a long period of time, then finally goes on, it may be trying to log onto a Windows network as well. Go to My Computer, Dial Up Networking, then right click on Vance.Net. Go to Server Types and take off the option for Log On To Network. Click OK, then close Dial Up Networking and My Computer.
Microsoft article #Q130073 provides more information on this problem.
Link to other information: U.S. Robotics Sportster 28.8 Modem Loses Connection Speed