Pc - Xbox 360 - router question?

Well, make sure that you got the hardware part all squared away. Since you said you can get the router to be communicated, I take it to mean that your PC knows that the router is there. Seems all you need to do is to setup the protocols (i.e. TCP/IP) to hook up to the internet. If you use Windows, you need to find the wizard that allows you to set up a home network. Follow that it should be easy.