Apache has language selection features for serving multilingual sites. See their manual.

Perl is a computer language that is indifferent to what language encoding it presents. Recent versions are pretty good at UTF-8 in tricky situations.

In serving dynamic web pages, pay close attention to the encoding the headers proclaim.

print mt("Hello World!");
[download]

package MyNamespace::MT::German;
...

sub mt {
   my ( $self, $phrase ) = @_;
   my %translations = ( 
      'Hello World!' => 'Hallo Welt!',
   );
   return $translations{$phrase} || $phrase;
);
[download]

Maybe somebody knows something I don't?

This is absolutely certain, no question about it (not just for you, but for anyone :)

of course... :-)

The only true wisdom is in knowing you know nothing.
--Socrates, attributed.

Yes. Oui. Ja. Ναι. Sė. Да. Sim.

If you want a quick and (very likely) nasty translation you could use online automated translation tools such as http://world.altavista.com/. If you want a usable translation that people have some chance of using without falling off their chair laughing then you need a fluent speaker of both languages to translate the text for you.

I'm not sure I see the relevance of this to Perl however. Perhaps you need to give us a little more information?

You may find it useful to look at Data::Phrasebook. Even though it's often used for getting SQL code out of your Perl, it can also be used to get natural language out too.

Template might also be handy.

Knowing nothing at all about your current application, it's hard to respond constructively.