PHP locks up in WIndows - Help!

Hello - I am trying to use a simple email script. When the php file is called, the browser just hangs. If I look in Task Manager, the php.exe has stopped - shows no activity. I am a PHP novice, so have tried several email scripts from the 'Net. Currently trying the PHP Email Responder from http://www.abspoel.com/roel-karin/download.php New install of 4.3.0 on Windows 2000 Server/IIS5 in CGI mode. Executables are in c:\php, php.ini in c:\winnt. I gave all "Read/Execute permissions by IUSR_machine" per documentation. Set register_globals = true, no change. If I run c:\php\php -i from a DOS prompt I get a screen full of output. Anyone can check out the config at: http://www.jernlaw.com/phpinfo.php Any suggestions greatly appreciated! Bil Click