Yes 135iAndy; actually that was all that was necessary. You begin by right clicking on 'Properties' under your existing Lexmark printer icon in the Printer and Faxes dialogue.
Then click on the 'ports' tab: the checked port is the one actively used by the printer. If this port is correctly set, upon hitting the 'configure port' button, you will see that the 'communication status' is set to 'active'. If it is 'inactive', you backup to the previous dialogue and 'Add port'; Port type can be set to either 'Standard TCP/IP Port' or 'Lexmark Enhanced TCP/IP Port' (first appears after installing printer drivers, no idea how it differs from 'standard'). Then you type in the IP address assigned to the printer by the router, which can be discovered by printing out the diagnostics page from the printer"s controls or a simpler way is to 'guess' an address, from the known router range, and type it in a browser window. The printer has a 'web interface' very similar to those found on routers, and if it opens, you have guessed correctly, and can enter this address in the 'IP address' box of the new port. The port name is automatically named to IP_192.168.xxx.xxx. You check the box for this port and once again head over to 'Configure Port' and communication status should be active.
Finally, you have to set the new port all your networked computers.
I don't completely understand DHCP, since I thought IP addresses were dynamically assigned on a first come, first served basis. So I am not sure what happens, if after a router reset, the printer is assigned 192.168.XXX.101 instead of 102...
Tech support called back this afternoon to see 'how I was doing', so I asked about the 'Lexmark enhanced port'. "This was introduced for backward compatibility with Windows 98...the Standard Port is recommended as it is more 'stable' under Win XP."
Also if you use the 'extended domain name' of a peripheral for a port name; Windows will over-ride the IP designation, when DHCP is used.
Last edited by Tanta; 2008-10-20 at 07:56 PM.
Reason: New info from Tech support