Article:
  Apache Web-Serving with Mac OS X: Part 1
Subject:   new to macs
Date:   2007-10-04 02:45:53
From:   Ed_Online
Response to: new to macs

Also... To get to your computer from outside the firewall there are a few steps.
1. Personal Web Sharing only works on Port 80, 427 & 443
This must be enabled..
2. Your router must be configured to allow access to your computer.
This means you must look at the instructions for the router and set it up accordingly. Look at your IP address assigned to the computer from your router. This is the IP you will have to set the router to allow outside access thru port 80.
If I knew the type router you had I could explain the steps.