Hi, you got what is called a dynamic IP adress. There is a pretty simple solution for peope who run Palace servers from home. Its a little piece of software you install on your computer.
First you make an account by one of the free dynimaic IP redirection services, this will give you a url for people to log in like "popgirl.dyndns.org" (just an aexample of course)
The cool thing is once you installed the software for this you will be automatically linked up everytime you log on to the internet. Glide made a very cool tutorial for this, check it out:
http://eagles.chatserve.com/dyndns.html
Its a lot of info to read but it will save you loads of trouble!
Good luck, and don't forget to invite us :lol: