bamey 3 Newbie Poster

hi all i have a laptop on my workstation, just bought a new router for my wireless computer, when they try to connect to internet on the computer name a dialog box comes up asking for user, password, and name of domain, computers always been workgroup never a domain, dont know what to put in these boxes and why they are coming up, the only way we can connect is local connection and unsecured, how do i get this box off and just log onto the net as we used to. any help will be greatly appreciated , thank you