Hello Steven,
there're two ways to set up WPS (Wi-Fi Protected Security):
one is using setup menu Router's console and the other is using PIN
that the latter is for using game console and i hope your intention
should meet with the first one.
As steps are involved and due to different scenerios in different
models, i'll not mention here.
I would like you to check on the following knowledge Base link from
Cisco.
"
http://www6.nohold.net/Cisco2/ukp.aspx?
pid=80&login=1&app=search&vw=1&articleid=16319"
Best Regards,
Michael