...then plug everything else into the other router ports. The router has a special port for input, so be sure to plug the cable from the modem into that.
i just bought a wi-fi router. when i got home, i realized that my modem only has one ethernet port which i am using with my microcell tower from att. can i plug the wi-fi router into my desktop directly, will an ethernet cable splitter work, or do i need to call my cable company?