Log Parsing

First off, let me explain what Im trying to do.... If any of you have ever heard of the game EverQuest, Im trying to make a program for my guild (its an online game.. so... you can have guilds with many people in it)... to post on the guild website, who's online and where they are....

How im planning on doing this, is making the program open a log file from the game (logs all the text in the chat window.. when you get to a new "zone" it will give a line saying "You have entered ----" --- being the zone name)...

So, what im planning on doing is opening this log file, parsing the new lines to it, then writing information the program got from parsing the file then uploading it to my server for output...

For example, say the program reads the following line
You have entered West Freeport.
It should see the "you have entered *" and recognize that the person went to a new zone then ignore the "You have entered" and take the "West Freeport" out for output to upload to the server

Any help would be appriciated =)