Help about web service!!!! emergency!!!!

[maxiachun]

i have a Asp.net web service on my computer and of course i set up my computer as a web server( windows 2000 server), so i can test the web service using IE and type http://localhost/RetrieveData/Service1.asmx in the address, it can run the test page and get data back from database and runs well but when someone else want to run the same page they can show the page but when they want to get the data back it shows" the test form can only run on the local computer" i think all the web server settings are correct! so i really need someone give me some help! I am Entry level person