How do I get a Brother HL2170W printer to work with an Airport Express?

I have a Brother HL 2170W wireless printer. I have tried to print to it through an Airport Express.(recent gift). I have it to the point where our ipads will see it in the Airport Utility as one of 4 wireless clients, but no app "sees it" as an air printer. If I try to print, and "select printer", it just says, "no air printer found".

I have tried the following instructions: (as seen here: https://discussions.apple.com/thread/2139105?start=30&tstart=0)

1. Open Airport Utility. Click "Manual Setup".

2. Select "Add wireless clients ..." from Base Station drop-down menu

3. In Wireless Setup Utility: Select "Allow client by PIN" and click "Continue"

4. Push HL-2170W's reset button(between Ethernet and USB ports) with pen or

paper clip for 3 seconds or so until yellow toner light flashes. The Brother will print a PIN number. (Yellow light will continue to flash as it searches for a network)

5. In Wireless Setup Utility enter PIN number and click "Continue"

6. After a minute or so Airport should recognize the Brother; press "Done"

7. Open "Print and Fax",and click "+" to add printer. HL-2170 will show in the Printer options and you should be good to go.

I have downloaded Bonjour (for my windows computer) and used it, to no avail.

I had a USB cable connecting the airport to the HL2170W as seen in the setup instructions that came with the airport. I have tried bothe with and without the USB cable.

What now?

Dave