Well if u forgot ur password u can recover it by simply connecting one of ur computer with the help of cable to router port 1, then open the browser and enter 192.168.1.1 in address bar ...
username ....... (blank)
password : admin
go to wireless ...then goto wireless security ... and there is ur security WPA key ...password.. make a not of it and try to connect it...
it would work without changing any personal settings...
Best luck try it out ...................