FYI. There are alternative web servers availabel for people who have problems running Apache on their computers. I was able to setup QnE to run PHP in 5 minutes. But, setup instructions are hard to find: Go to Help then click on Frequently Asked Questions.
Quick ?n Easy Web Server Professional Version 3.0.1
http://www.pablosoftwaresolutions.com/html/quick__n_easy_web_server.html