Environment Windows Vista, Netgear FM 114P router incl. printer port, HP Deskjet 720C
Problem Printing from Vista using network printing port of FM114P
Solution DON'T install the Windows XP/2000 Netgear drivers. Don't work and mess with your Windows Vista.
You want Unix Print Support from Vista (Control Panel\Programs and Features: Turn Windows features on or off): Print Services\LPR Port Monitor.
Then "Add Local Printer", "Create a new port", select "LPR Port", enter IP address of your router and L1 as the queue name (see FM 114P Reference Guide).
Finally I had to select the appropriate printer driver.
Perfect fix! Thanks.