windows 2000 server

I am setting up a windows 2000 server that has SP4 with FrontPage extensions installed.

After setting the domain name up in IIS, I right click on a domain name and select ?All Task?, configure server extensions.

I get the following error, ?the server administrator and the server extension on this server are not compatible. The administrator program is too old to use with this server?.

Any Idea how to can update the IIS?