There is a web administration feature in IIS4.0 to do this.
I don't know about IIS3, but it installs into IIS and to get to your server you can type either; yourdomain.com/ntadmin OR xxx.xxx.xxx.xxx/ntadmin .
It is on the IIS disk.
It works well, except you cannot have Proxy 1.0 on the server, and you cannot view security logs.
It is a life saver.