I click on int. exp. on the desktop & go online immediately. Want to change to username & password to get on.?

Click on Tools > Internet Options > Security tab > Custom Level ... > scroll all the way to the bottom and under user authentication choose prompt for username and pasword logon

Not sure why that's not working... try this:

Open up Internet Explorer

Click Tools

Click Internet Options

Click on the tab Content

Underneath 'Content Advisor', Click Enable

Then click on the tab General

Under 'Supervisor Password click Create

Make you password then click Ok.

Then Apply and finally Ok

:)

You can't have a username and password for Internet Explorere, what you should do is have a password for your windows account (Assuming you are using Windows) this is done under control panel, Users.

Or have a password for your Wireless Router. Its called WEP or WPA.