You can install new langauge packs like this:
Code:
yum install openoffice.org-langpack-LANGCODE
Where LANGCODE is the language code for the language you'd like to install. In your case, you'd want to run:
Code:
yum install yum install openoffice.org-de
Once it has been installed you can switch the default language in the OpenOffice preferences.
Firewing1