HP Printer networking problem

Hi,
I am trying to network an HP 3550n printer with (2) Win98se computers
and 2 osX g5's. Everything was fine for almost a year until a month
ago. I moved from a Linksys 4-port router to a Netgear 8-port router
two months ago. And from the Netgear 8-port to a Netgear Wireless
4-port router plus a Netgear 8-port switch. I'm getting out of my
element and need to retrace my steps. The computers network fine.

When I ask the JetDirect box to summon an IP address for the printer
setup by printing a config page - I get all 0's for all network
connections. I would like to put in a static IP address BUT a) I
don't know how. b) I am pretty sure the printer/router relationship
has been compromised some how. I believe there is some mixup in router
control on one of the pc's.

Thanks very much any grain of truth you could add to my stymied
dilemma.

Chris