Depends on the version on Windows and IE you’re using:
Windows Millennium Edition:
1. Click Start, Settings, Control Panel, and then double-click Internet.
2. Click the Connections tab, click your Dial-Up Networking connection, and then
clickSettings.
3. Under Dial-up Settings, click Properties.
4. Click the Dialing tab.
5. Click the “Disconnect when connection may no longer be needed” check box to
select it.
6. Click OK, click OK, and then click OK again.
Internet Explorer 5,5.01, 5.01 Service Pack 1, 5.5, Windows 98 Second Edition:
1. Click Start, Settings, Control Panel, and then double-click Internet Options.
2. Click the Connections tab, click your Dial-Up Networking connection, and then
click Settings.
3. Under Dial-up Settings, click Advanced.
4. Click the “Disconnect when connection may no longer be needed” check box to
select it.
5. Click OK, click OK, and then click OK again.
Internet Explorer 4.0, 4.01, 4.01 Service Pack 1, Windows 98:
1. Click Start, Settings, Control Panel.
2. Double-click Internet.
3. Click the Connection tab, and then click Settings.
4. Click the “Disconnect if idle for minutes” check box to select it.
5. Set the number of minutes you want Internet Explorerto remain idle before it
disconnects from your ISP.
6. Click OK, and then click OK again.
Internet Explorer 3.0, 3.01, and 3.02:
1. Click Start, Settings, Control Panel.
2. Double-click Internet.
3. Click the Connection tab, click the “Disconnect if idle for
minutes” check box to select it, and then click OK. Note that is an
number of minutes you can adjust up or down.
Internet Explorer 2.0:
1. Click Start, Settings, Control Panel.
2. Double-click Internet.
3. Clickthe AutoDial tab, click the Auto Disconnect check box to select it, and
then click OK.