After installing php-4.2.3-installer.exe per install.txt and configuring IIS as recommended in various help files, I found that my browser would run .php files ok but not .html files with inbedded php code. I wasted a lot of time trying to find the answer which is not mentioned anywhere in the install.txt, (or any other help of FAQ for that matter);
 The way install.txt describes setting up the IIS server works very well for getting the browser to work with .php files but does nothing at all for .html files that have imbedded php code. In the Internet Services Manager>Default Web Site>Properties page>Home Directory>configuration the following must be added to run php code imbedded in an HTML file:in addition to adding .php and the executable path,it is necessary to also add .html and .htm extensions + the executable path in order to run imbeded php code. Perhaps this solution should have been plain to see - but not!
Thanks for your consideration,