Whats difference between external and internal ip address
 

I know how to find my internal ip address it shows it in mysql or at least I think that is the internal one. How do I find the other ip address or is it the same, im confused on this issue.

if your running world.exe and zone.exe on the same computer with the mysql database on it then internal ip is 127.0.0.1, and your external IP is whatever whatismyip.com tells you it is