Setting up FTP on a Windows server is quite a different process. To begin you need to configure IIS as there is no FTP included by default. Prepare yourself by inserting the operating system CD into your optical drive.
To do this, go to Start > Control Panel > Add/Remove Programs > Add/Remove Windows Components; from here go to Components > Application Server, highlight Internet Information Services (IIS) and click Details.

click to enlarge
Next, fill the checkboxes of
Common Files,
File Transfer Protocol (FTP) Service, and
Internet Information Services Manager then click
Next to install these new components.
FTP is then set up and can be accessed via command line or an FTP client.
If you're setting up an in-house FTP, then you can select Allow only anonymous connections, which will allow your users to connect to the FTP site without authentication.
This is done via Start > Programs > Internet Information Services Manager, where you should find and expand the server name in question, right-click Default FTP Site and choose Properties > Security Accounts. Then check Allow anonymous connections and Allow only anonymous connections.