WordPress MU

So the question is: How can I translate my MU in finnish language?
If someone have solution or finished translation please help me.

I've begun to translate MU in finnish. Käsipelillä. :-)

You can partially translate WPMU in Finnish by installing a "normal" WP language file, which you can download from here. I downloaded file "1.5_fi_FI.mo" and installed it. It works pretty well.

Nice one kuopassa and can I have the transtlation when it's finnished and how you translate it?

And prob with that 1.5_fi_FI.mo file.
I uploaded the file in wp-includes/languages folder and then I set that to the default language and now I have next error:

Fatal error: Cannot instantiate non-existent class: cachedfilereader in wp-includes/l10n.php on line 67
(I take the absolute path away from the url ;) )