Q: upgraded to extreme - my wireless printers don't show.  i was using an airport before.  do i have to go thru setup on my computers?

Hello MrConsistent,

It sounds like you have some AirPrint printers that were working fine with an earlier AirPort Base Station but after you upgraded to an AirPort Extreme the printers are no longer seen.

I'm not sure if your printers have setup screens themselves to insure they are connecting to your Wi-Fi network, but please step through this article to check the setup.

Connect an AirPrint printer to a Wi-Fi network - Apple Support

Take care.