We have several HP printers and have found that incompatibilities exist between certain operating systems (Windows, XP, Windows 2000) and certain printers. Check the printer documentation for compatibility (although I'm sure you've already done that). We had Windows 2003 Server, and a multifunction printer was not supported by that operating system. You might also want to uninstall any previously installed printer software, and then attempt to reinstall. We've successfully done that when things have "hung up." Good luck!