You can use it for a development machine probably. You won’t be able to use it for production use as IIS on Windows 2000 Pro only allows 10 users to connect at any one time.
if you do not need windows or ASP/.net, (on the server),then you could format and install <a href=”contribs.org”>SME server</a>. it is a free server implementation that installs CentOS as the OS, web server, ftp, email, ssh. DHCP, DNS and others. you could install that and use that to host your sites. it works well and is well supported.