 <p>I had read that for early Windows OS I should use the non-thread safe version of PHP. That version is missing the php5apache2_x.dll which caused doubt about this package. An acquaintance said to use the thread safe version which had the php5apache2_4.dll. It seemed to work in the Windows CMD browser after I set my environment variable to that folder. But digging further, it appears that I should also upgrade my Apache to 2.4 as later PHP and later Apache are using different Visual Studio compilers.</p>