So, I've got cable internet. And a roommate. So, since he spend a LOT more time on online games than I did, (And his scores in IFS prove it lol) I put the modem for our internet in his room, so he could have a hard-wire connection and everything else in the house is wifi. It works well enough to watch a show online or something, but the connection, especially in my office, is intermittent, and with the new computer coming, I want a steady, reliable connection. There IS a live coax cable wire running to the office. Can I simply buy another modem to connect this cable to, and then use an ethernet cable to run to my tower? Can you RUN more than one modem at once?