Hi Joe,
When you turn off the wireless router, are you back to normal?
The printers are hooked up to the netgear and have their own network-interfaces/printserver and ip-adresses?
disconnect them or switch them off.
ping the ip-adresses.
if you get respons, it must be from outside through the wireless router.
most printervers/HPjetdirectcards have their own web-server, so you can also try to open
http://<IP-ADRESS> in IE/FF, see what you get and is this your printer?
With this web-page open, on printer-status, send a job to the printer, do you see a status change in the webpage?</IP-ADRESS>