I changed my network WEP key, now my wireless printer won't work. How do I change the printer setting?

I changed our home network wireless WEP key, and managed to change each computer's setting so each of our computers connects. Now, however, when we try to print, our printer is not working anymore. What kind of setting do I need to change on the printer, when the WEP key has been changed? It's a Brother HL-2170W. Thanks.I changed my network WEP key, now my wireless printer won't work. How do I change the printer setting?
iDolly, here is the link to the Brother FAQ on setting up your printers wireless connection. http://welcome.solutions.brother.com/bsc