Quoted from this article. Hope you can reverse the situation.
Using the Discussion Feature in Internet Explorer
This article explains how to use the Discussion feature in Microsoft
Internet Explorer when you are viewing files created in a Microsoft Office
2000 product.
http://support.microsoft.com/?kbid=255085
SUMMARY
This article explains how to use the Discussion feature in Microsoft
Internet Explorer when you are viewing files created in a Microsoft Office
2000 product.
MORE INFORMATION
Create a document in one of the Office 2000 products, and then save it as a
Web page.
In Internet Explorer, open the file you created.
To add a discussion, do one of the following:
If you are using Microsoft Internet Explorer 5 or later and you have
PowerPoint 2000 or Microsoft Office 2000 installed, click Discuss.
If you are using Internet Explorer 4 and you have PowerPoint 2000 or Office
2000 installed, click View, point to Explorer Bar, and then click Discuss.
If you are using another browser, or if you do not have PowerPoint 2000 or
Microsoft Office 2000 installed, type
http://ServerName/msoffice/ in the
address box, where ServerName is a Web server to which you can save files.
This brings up the Office Server Extensions start page.
Ask your system administrator for the name of a Web server to which you can
save files.
NOTE: When you connect to a Web page from the Office Server Extensions start
page, no matter what browser you are using, the Discussions toolbar that
appears will look different from the one that appears when you start a
discussion from within Internet Explorer 5. See the Microsoft Office Server
Extensions start page Help file for more information.
Using threaded discussions for collaboration
The Discussion feature allows you and other people to insert remarks into a
Web page. The discussions are threaded; that is, replies to a discussion
remark are nested directly under it. You can have multiple discussions in
progress simultaneously.
You start a discussion from within your browser. (You can also work directly
from within Microsoft Word, Microsoft Excel, or Microsoft PowerPoint.) When
you use the Discussions toolbar, anyone reviewing your Web page can view and
reply to any discussion.
You can filter discussions on a Web page so that you read discussion remarks
added by only a particular participant or within a certain time frame. You
can then review discussions in your browser or in a Microsoft Office program
and incorporate any changes you want to make to your Web page, based on the
feedback you receive.
