I am trying to run a solaris 10 webserver(apache). I want my website to be "http://www.whatever.com" during my installation process of solaris i named my host for my server "whatever" and named my domain name "whatever.com"

is this right or do i need to make my host name "www" and dmain name "whatever.com"

my setup is my ISP---> cable modem---> router ---> my server(my router and cable modem are different pieces of hardware so i believe they both have their own ips. i have port forwarding setup through a static ip.

if my modem, router, and computer each have their own ip addresses, what information do i need to give when i register my domain name.

im thinking this: "whatever.com" and the ip would be my servers static ip address.
or would it be my gateway's ip address or my modems ip address.

so basically...how does the internet (a dns server) know where to find my server if my router is the one that resolvs my static ip address?

p.s. - i'm using www.no-ip.com as my domain registrar.