http://localize.drupal.org/translate/languages/kn

Help Kannadize Drupal and Drupalize Kannada! Please join the Kannada localization group on localize.drupal.org and contribute translations online.

If you are the casual contributor who doesn't like messing around with translation editors, You need none of that. All you need is an account on Drupal.org. Or incase you prefer to / have translations locally/elsewhere, Please import your .pos in one shot.