Satellite Networking Problem

I have a satellite modem that has only a usb output. I would like to set up my home network with the use of a router which has ethernet connections. Where can I find an adapter that would allow me to plug the modem into the router. I do not want to go wireless because I have 3pc's and a lap top networked. I am trying to avoid having to go through my pc as a server because I want to maintain the integrity of the signal when more than one user is online. Please help!!