Salem,

in the web connection setting in your nokia communicator, find Proxy setting and add the proxy IP, Port ,  username and password.. and simply it will work

---

From: "Salem S. Maq" <sysop@xxxxxxxxx>
Reply-To: isalist@xxxxxxxxxxxxx
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] ISA Server 2000 Authentication for Nokia Communicator 9300i
Date: Mon, 12 Jun 2006 19:54:20 +1000 (EST)
>http://www.ISAserver.org
>-------------------------------------------------------
>
>
>Hi everybody, i had a problem when i tried to connect Nokia Communicator
>9300i to the WLAN in my company. It always show that the page cannot be
>displayed.
>
>I know the error message is (HTTP 407 Proxy Authentication required)
>because the isa server 2000 requires authentication to fulfill the
>request.
>
>The problem is , i cannot find any place to enter my user and password :)
>
>any body can help?
>
>best rgds,
>
>-ssm-
>
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