Hello dirkp,
Launch the OpenOffice langpack.exe.
The first windows
(installation preparation) propose you to unpack files : valid this step but cancel the next windows
(Installation Wizard).
Open folder of unpacked files
(something like : OpenOffice.org 3.2 Language Pack (German) Installation Files) You can see a file named:
openofficeorg32.msi.
Use
Universal Extractor in order to extract it
(Extract method : MSI Administrative Installer).
When it's finished a new folder appear :
openofficeorg32. Open it and copy all folders which are in
OpenOffice.org 3 (Basis, licenses, program, readmes, share) into
\Apps\OpenOffice\App\openoffice (with overwriting).
Last step: run OpenOffice then Tools, Options , Languages settings, Languages. Line
User Interface, German should appear in the select box.
Apply and restart OpenOffice