[NTLUG:Discuss] setup web site

[m m]

Hi all:

I have a domain name registered at register.com, say, mysite.org.
and I have request an IP address from my ISP, 123.123.100.100
use Apache as a web server.
IF I use IP address as the URL (http://123.123.100.100), it works (display 
my pages).
But if I use the domain name as the URL (http://mysite.org), it don't works.
I know something need to do on DNS thing, Could anyone give me a hand?
TIA

jc
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