Need help setting up Linksys wireless router as wired befw11s4

Ok I have no luck with routers.. I just bought I used router that is working great compared to my last one that I had except that I cannot get it installed ... all the lights are working on it.. I have ethernet cords hooked up..as I dont have what I need to have a wireless connection yet.. Even the internet light is working... so I tried to hook it up with the install cd and for some reason as I get closer to the end of getting it installed a box comes up and says this setup wizard has to close.. so then I cannot finish it... Then I get referred to the linksys website to download something that would install it for me.. welll I go there do everything it tells me to.. all lights and veerything are working on the router even internet light.. then it tells me it cannot detect a linksys router.. BUT EVERYTHING IS HOOKED UP.. I also tried installing it manually ip address not working.. and did not succeed on that either.. Can anyone help? If so please help me step by step.. in some way.. I am not good with computers... at all ... Nothing seems to be working.. cant understand why the setup on linksys.com wouldnt detect the router everything is working fine on it.. thanks in advance..