If You Cannot Discuss On A Document On The Portal Site of SharePoint Portal Server,
The Reason May Be The Security Setting Of Windows 2003.
IF Your OS WINDOW Server 2003 with the IE Enhanced Security Configuration Installed,
You will not be a for discuss on a document, Even if you are using office 2003.
The Solution IS Simple:
(1) Open Control Panel
(2) Add / Remove Programs
(3) Choose Windows Components
(4) Clear The Internet Explorer Enhanced Security Configuration
(5) Click the next and the finish button.
