Is a router also a modem?
I have a Linksys – Wireless-G Broadband Router with 4-Port Ethernet Switch
Model: WRT54G2 from bestbuy. I need to choose an ISP for my new apartment and I am thinking about comcast. when I try to sign up for comcast, they ask if I need to lease a modem for one person, purchase a gateway for up to 5 people or if i already own a modem. They also ask if I want installation on 1 computer or installation on 2–5 computers. So will my old router count as a modem? and which installation will I need to choose for me and my roomate? can I just get the installation on one computer and use the wireless router so my roomate can have internet?
This question is in the General Section. Responses must be helpful and on-topic.