This is my first time setting up a Zen-Cart. Everything is working great, but at the System Inspection screen I am getting a red error message at:

MySql Support =OFF

When I click the more info link it comes back as:

The database type you have selected does not appear to be supported by the PHP version you have installed. You may need to check with your hosting provider to check that the database type you have selected is supported. If this is your own server, then please ensure that support for the database type has been compiled into PHP, and that the necessary extensions/modules/dll files are being loaded (esp check php.ini for extension=mysql.so, etc).

PHP Warning: PHP Startup: Unable to load dynamic library './mysql.so' - The specified module could not be found. in Unknown on line 0

Does anyone know how to fix this?

Thanks in advance for any help.