What is the username and password for the 192.168.1.1 site?

I need to access my Wi-Fi wep key on my Itouh so that I can put it on my iPhone

It depends on the brand and model of the router. Find out here:
http://www.routeripaddress.com/brands
http://www.routerpasswords.com
http://cirt.net/passwords
http://www.phenoelit-us.org/dpl/dpl.html
http://portforward.com/default_username_password
http://www.pcwintech.com/default-router-modem-passwords

If the defaults don't work then somebody must have changed it. Reset the router by pushing a pin or tip of a paperclip through a tiny hole behind the router. Hold it for about 30secs until you see the power light turn off and back on. That should erase the router's settings and return to defaults.

Once you are able to get inside the router's user interface, go to the Wireless settings tab and do what you want to do.