Remove Password And Rename Network

I setup a new router, and it works great. However, the first time I connected to the internet through it, I skipped the Network Setup Wizard or whatever it's called. My idiot of a friend "helped" me setup the network without me knowing it, renamed it after himself, and put password protection on it. I want to remove the password and rename the network. I checked all the router settings to make sure that WPA or anything else was active, but the problem persists on my craptop, and the network isn't showing up in the "manage wireless networks" screen.