http://www.tomshardware.com/reviews/wireless-security-hack,2981.html

This is a final warning.  If your wireless router is still set to use the default password, or you haven’t even logged into it yet, go change your password.  Now. You can probably find your router’s configuration interface either here http://192.168.1.1 or here http://192.168.0.1 No, seriously, go do it right now, I’ll wait. Ok, now that we’ve got that out of the way, here’s why it’s important to have changed it....