Hello Dave-B.
Welcome to the HP forums! I understand your concerns with your Officejet 8500. Have you connected your "new router" information through the printers software?
Please verify your exact model number. Click here to find out.
Just so I understand you correctly, you are unable to select the print option, when clicking on the Officejet 8500?
What is your operating system? Windows or Mac?
Once I verify this information I will assist you further.