Bonjour is an Apple technology that's designed to simplify networking by seeking out computers, iPods and other devices and making them quickly available from your computer, no configuration required.
While Bonjour is a standard feature of Mac OS X, it can also be added to Windows, where it offers much the same functionality. And so if you install the Bonjour Print Services for Windows, you should find the Bonjour Print Wizard is able to discover and configure any Bonjour-enabled printers on your LAN, with none of the usual browsing and other hassles.
Except, well, it may not be that simple. If you're using a third-party firewall (anything other than Windows own) then it may block network port 5353, which Bonjour requires to work. Check your firewall setup if you have problems.
Otherwise, though, Bonjour Print Services should make it easier to share network printers over wifi or Ethernet, or USB printers shared via a Mac or AirPort base station.
Bonjour can work well, but if there are conflicts with firewalls or other software then you might be better off using regular Windows printer sharing