changing @setlocale -- no affect

[RaySpike]

Hello,

I've got some troubles with the language date.

The date in orderhistory and email, can't be changed to another language.

Only english will shown, I use english and dutch

When I test this localy it works great. But when i do this on a live server it shows only the english date.

In a lot of threads, says it must be the @setlocale
So I try this at local testmachine (where it works great). I'll pick the dutch.php (from my template) and change the @setlocale to

@setlocale(LC_TIME, 'en_US.ISO_8859-1');

because locally works, so now for the dutch and english, the date should be in english. But not.....still english and dutch (long date)

What do I have to alter to get this work.

On the live server (where I am missing the dutch date) I've tried to get the dutch date

@setlocale(LC_TIME, 'nl_NL.ISO_8859-1');
@setlocale(LC_TIME, 'nl_NL');
@setlocale(LC_TIME, 'Dutch');
@setlocale(LC_TIME, 'dutch');
@setlocale(LC_TIME, 'nl');
@setlocale(LC_TIME, 'nl_NL.utf8');

Or is this an admin-switch or do I need to change another file?