BadBlue's new version of their popular, free web server for Windows now has an integrated PHP Wizard. The Wizard steps you through a complete configuration of PHP in three panels. It is the fastest way to get PHP running on a Windows PC or server.
Free download of BadBlue personal edition (<300K):
p.s., It also includes the PHP ShareOffice library which lets PHP programs read Excel spreadsheet data, Word documents or Access data in a single function call. Each ShareOffice function call can read an entire file into an array and it's very fast.