On the 4000, which I assume is the same, you connect the system to your LAN and give it an IP for administration as part of the install process. So you go into Internet Explorer and type in the administration IP address of your system and it will come up to a web page that has some links on it. One of them is Client Preparation. That is a 6-step process that helps you configure your browser to interact with the system - makes sure you have the right version of Java, loads security certificates, applet cache and some other stuff.
After you go through that process you will be able to login to the system for administration. Once you get there you will see a link for Expert Mode, and if you go into that it will install comwin on your system. Then you can use comwin for anything depending on how you set it up.