Need help with my routing (I think??) :(

[over_kill]

I am using DHCP from my router, and I believe my coax port from my room to where-ever is static. From what I hear, everyone in this place (it's brand new, just got build last year) has the same external IP address? My ISP is Frontier Communications, and they use DSL. Any thoughts?

and thanks for the responses guys!