4.0.1 Ultimate windows install fail

Trying to install 4.0.1 Ultimate to a Windows 6 IIS server; getting error message

MySQL support

Your server does not support MySQL

php 5.4.18 shows good using info.php; MySQL 5.0.10

It does not have a MySQLi entry only a MySQLnd.

Solved: Multiple .ini files and we were editing the wrong one.