Brian,
This easiest way to do it is to create a folder called c:\php and then either move the files you extracted into it, or extract the zip file to that directory. From there, make any changes necessary to c:\php\php.ini-dist and save the file to c:\windows (or c:\winnt) as php.ini. There ya go, PHP is now installed as a CGI binary. To configure your web server to parse PHP, consult the installation section of the PHP Manual. There's pretty detailed step-by-step instructions posted there for Apache, Xitami, and all the various IIS-derivatives. If you need more help, post back and I'll see what I can do🙂 HTH,
Cheers,
Geoff A.Virgo