inital networking setup

["Kenn Murrah" <kenn@thebytebusiness.com>]

Greetings ..

I'm about to install Debian for the first time, and I want to clarify what
my network settings need to be.

I have a local network 192.168.100. with a gateway of 192.168.100.42 ... I
want this box to be reachable from the outside world as well, at
66.162.219.xxx, and I've configured the Cisco router to pass through
66.162.219.xxx ....

During the initial installation of Debian, should I assign the new box its
IP of 192.168.100.43 and the gateway 192.168.100.42, then later edit
/etc/network/interfaces to tell it of the 66.162.219.xxx ???   Is that the
right approach?  And is that all I have to do? Am I missing?

Any and all help is appreciated.

Thanks,