I need to connect my Canon MX452 printer to my home WiFi network because I have a few laptops which are able to connect to the printer, but cannot print because of no working WiFi on the printer. I have AT&T U-Verse Internet and the modem they have provided to me has a fully numeric passcode. The printer has a numeric keypad just like a phone, but I an unable to actually enter numbers with they keypad, only letters. For instance, I can use the "2" key to enter "a", "b", or "c", but not a "2". I am unable to change the password because of how AT&T service works. How do I enter the numeric characters for my passcode into the printer?