java applet window

LOOK I HAVE WINDOWS 2000, 500mhz, FIRE FOX BROWSER, AND
DIAL UP CONNECTION.

ALSO I USE KERIO FIRE-WALL.

AFTER LOGGING IN-IT TAKES A WHILE TO LOAD THE JIN APPLET.
I GET THE JIN APPLET TRYING TO CONNECT TO PORT 5000.

WELL IT NEVER CONNECTS TO PORT 5000, I GET AN ERROR. I
CHANGE THE PORT TO PORT 80. THEN I GET TRYING TO
CONNECT TO PORT 80, AND IT SAY CONNECTED.

NOW EVEN THOUGH I AM CONNECTED, I CANNOT PLAY AS
NOTHING HAPPENS, I ISSUE A CHALLANGE AND NOTHING
HAPPENS, I ISSUE GET SERVER HELP NOTHING HAPPENS, I ASK
A QUESTION AND NOTHING HAPPENS.

PLEAE ADVISE AS QUICKLY AS POSSIBLE WHAT THE PROBLEM
IS. THANKS.