Hi! I live in a dorm and we have cable internet that doesnt require any modem (you just plug the cable into your pc and have internet access). I bought a wireless router and I see the Installation Guide says it should be used with a modem. Can I use this router to distribute my internet connection through wifi without a modem? If so do I need to plug the internet cable in the "Modem" plug or in a "Wired" plug? Thanks!