Yeah windows command prompt (Where most of your output will go) has some issues with anything beyond the standard English characters, thought that could possibly be just an effect of my local being English.

If you're using WinXP, try this:

Go to Control Panel -> Regional and Language options

Click on the "Advanced" Tab

The top section is Labeled "Language for non-Unicode Programs; Click on the dropdown in that section and look for "Finnish" Click on it and hit OK