BLANK SCREEN EASY FIX

I am new to XP(NT4) and to php. And just like a lot of beginners I was getting a blank screen when I loaded up my test page the should have produced "Hi, I'm a PHP script! " I double checked my and modified web server settings using the Manual Installation Steps several times. But made no progress. My problem was caused by the EXTENSION of my FILE. I was using *.HTML instead of *.PHP. DUH!! I hope this helps any other newbies or those trying to help the newbies. Thank You Salomon newbie - 2nd class