Go here for <a href="http://www.hp.com/cgi-bin/cposupport/swindex.pl?p=dj720c&l=en&c=MicrosoftWindows2000" target="_blank">support statement for Win2000</a>. Unfortunately, the link appears dead. It should list step-by-step procedures on installing the software in a variety of circumstances, including sharing. I have sent an email to HP telling them about it. As soon as I get a response, I'll post it here.
Also, notice the link there for Manuals...your User's Guides are available...you just might be missing something.
Sorry I couldn't help out more...Good Luck!