I'm running Macbook Pro with Snow Leopard 10.6 (... also tried and failed with Dell Inspiron 1501 running XP. It finds the Wifi printer when it searches, but comes back with "the printer installation failed. Operation could not be completed (error 0...
Problem solved. Not sure what the solution was, but once I got Canon tech support on the phone, the problem went away. Can they send signals to the printer over a cell phone??? Of course, I switched out my Airport with a newer model I just bought fo...