Proxy Server and Modem Settings Available at the Same TimeID: Q188359 
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When you configure Internet Explorer to connect to the Internet using a modem while it is configured to connect to the Internet using a local area network, you may notice that you are still able to change the configuration information under Proxy Server in the Internet Properties dialog box.
This behavior is by design.
Additional query words: 98 4.00
Keywords          : kbnetwork kbui msiew95 win98 
Version           : WINDOWS:3.02,4.0
Platform          : WINDOWS 
Issue type        : kbprb 
Last Reviewed: February 10, 1999