Hello Jane.

Almost certain you have a permissions issue.

Please take a look here and make sure PHP and MySQL are setup correctly first. Then review the permissions again, and again.

IUSR_machinename (Internet Guest Account) and SYSTEM or NEWORK or IIS_WPG may need some rights in certain locations as well.

PHPBuilder - IIS6/PHP Setup FAQ

Do Not copy PHP.INI to the Windows folder as some suggest, fix the path and set an environment variable called PHPRC and set to the location of your PHP installation.

Don't forget that IIS needs rights to read PHP/MySQL as it's the one doing the work.