Important: you must have NeoOffice 3.3 or higher installed to be able to install this language pack.
Installation of the language pack is the same as the NeoOffice installation instructions. Also, the language pack installer will check if you have already installed NeoOffice 3.3 or higher.
Please note that installing a language pack will not add spellchecking support for a language. To add spellchecking support for a language, launch NeoOffice and select the Tools :: Language :: More Dictionaries Online... menu.