For WP 2.3 – 2.5 you should user 1.3.* version
WP_Multilingual is extension that brings WordPress multilingual support. With it’s help you can publish more that in one language at a time. Its easy, cheap and simple way to use multilingual advantages of blogging.
With this plugin you can manage your Posts/Pages/Categories/Blogroll Links/Tags in multilingual mode.
Plugin also allow you to localize theme relate to Selected language, and localize Wp-admin in your language.
Plugin Localized in
- Dutch (Holland or Netherlands)
MySQL database issues
You will need to check which character set your database is set to before you proceed. Almost 99% of hosting services that provide MySQL set the default language to Latin. Before you proceed you will need to change this to UTF-8. Not doing so will prevent your chosen character set from displaying and saving correctly. You can check your character set using PhpMyAdmin ( http://phpmyadmin.net ). If your database is set to UTF-8 then you can proceed, otherwise you will need to follow the step below.
Take look to detailed installation article http://made.com.ua/multilingual/