Print sharing is what you should be concerned with. You'll most likely need to remap all the computers in the office to use the new server as the print server. However, I'd also examine that authentication method as well as the Active Directory problem (domain controller). What OS is running on the current server? ~2000 everyone went domain happy when server 2000 came out... sound suspiciously like your environment is a domain environment.
Well the current server is running Windows 2000 Server Edition I believe. However, is their current version important? I don't understand why I can't just setup the printers on the new server as shared printers. Is print sharing not what I want to do in this circumstance?
I am trying to be as cautious as possible throughout the entire process but I want to keep the idea's moving forward until everything get set in stone. These are the types of things that I don't know but need to know and was looking to learn from the people here.