I have the Westell 2200 Modem, model A90-220015-04 and a Linksys Wireless B Broadband Router Model BEFW11S4-VN Version 4. I would like to upgrade to The router to a Linksys Wireless G or N. I just don't know what I should upgrade the modem to. I have a home network with my desktop PC and 1 notebook PC. Can I get a combination Router & Modem? Any suggestions would be appreciated.