Autoconnect
From MozillaZine Knowledge Base
How do I set up Mozilla to dial (connect) automatically? (Windows)
In Windows 98, open the Control Panel (Start | Settings | Control Panel). Double-click Internet Options. Select the Connections tab. Set the dial option to "Dial whenever a network connection is not present". Also, select one of the dialup connections and press the "Set Default" button.
In Windows 2000/XP open the Control Panel (Start | Settings | Control Panel). Double-click Administrative Tools. Double-click Services. Look for the following services:
- Remote Access Connection Manager
- Remote Access Auto Connection Manager
- Telephony
Set all those services to automatic.
Note: Mozilla cannot auto-disconnect. However you can download HangUp and use that small utility to hangup (Windows.