For Windows XP & 2000

Open the Control Panel. Click the Network and Internet Connections option, then choose Network Connections. Note If the Control Panel is in Classic View, double click the Network Connections icon.
Right click your Expedient Dialup Connection and choose Properties.
Uncheck the Use dialing rules option. Your Local Access Number should be entered into the Phone number field exactly as it needs to be dialed.
Once you have corrected the number, click OK and try the dialup again.