Honestly I don't have the foggiest if it makes a difference or not. My php.ini looks like this as far as to how it lists modules;


[PHP_EXIF]
extension=php_exif.dll
[PHP_GD2]
extension=php_gd2.dll
[PHP_MBSTRING]
extension=php_mbstring.dll
[PHP_MYSQL]
extension=php_mysql.dll
[PHP_MYSQLI]
extension=php_mysqli.dll
[PHP_SMTP]
extension=php_smtp.dll


So I would assume so, but I don't like assuming. Sounds like with all the troubles your having though it may be an idea in the future to try a different WAMP or give a go at installing by hand (my preferred method).
-m