I am new to GIS Programming.Can anyone plz help me to configure Mapserver in windows.I have already created the project folder sample and placed in the following location.

1)C:\Program Files\ms4w\apps\sample.The actual problem is that after executing http://localhost:81/sample/hello.html , I am getting the following error
Not found
The requested URL/sample/was not found
But i am getting the mapserver connection after starting the Apache Server and browsing the url
http://localhost:81/
Can anyone plz suggest a method to get my map executed using Mapserver.For any suggestions,I am expressing my sincere thanks in advance.