I successfully setup an airport wireless distribution system (WDS) using an airport extreme and airport express. I have a printer plugged into the airport extreme. Prior to adding the airport express to the network to extend the wireless network's coverage, I was printing OK. When I added the express, I could no longer print. When I unplug the airport express, I can now print. It would seem that the wireless distribution network setup, somehow interferes with printing to printers plugged into either of the airports involved in the WDS. Is there something that I'm missing here?