I'm trying to install Wordpress 3.1 on PHP 5.3 (under IIS 7.5), but before getting to the configuration page it's throwing this error:
Your PHP installation appears to be missing the MySQL extension which is required by WordPress.
Typically, that means to me that the MySQL driver hasn't been loaded, so I checked my phpinfo() for the correct php.ini file, and verify the path to the extensions directory is correct, which it is (C:\PHP). I noticed in the phpinfo() that the mysql and mysqli libraries were not loaded, but mysqlnd was. Are there incompatibilities with mysqlnd?