j2ee server not recognising/executing the script

plz... help..

my j2ee server is starting up properly... but... when i put the local IPaddress over internet exp.....its not opening the home page of j2ee server.. moreover due to that.... wen i run ne of my jsp application the server is not executing the jsp scripts
and opening the actual code in notepad...
n yes i don want to reinstall the server..
if anybody out thr came accross this kinda problem...ever b4 then plz..help..

thanx!!!
pcmonster