customising Knoppix that uses finnish language by defaut

Hello to all and thanks to developers for nice live Linux.

What wonder me is that there is not finnish language support
in kde, gimp, openoffice and so on.

This is the thing that I need little help because I'm trying to
do custom Knoppix that has finnish language support
in Kde, OpenOffice, Gimp, and at least Evolution, so that
this Finnish Knoppix would be ideal for education and testing.

I'm new with debian and knoppix but I have experience
in redhat and mandrake.

Where to begin???
What to I need for this???

Thanks.