I have a cable modem connection through @home. I want to be able to link up my computers at home to each other, and also to share the Cable connection if possible. Right now I have a LinkSys hub that allows my computers to see each other. However, when I connect to cable modem into the hub, it does not work. Would buying the Linksys router make a difference? Also, I can pay for a second IP address, but I am not sure if that is worth doing. any suggestions?