I receive about 3 -5 direct mails on a daily basis, asking questions about OpenOffice.org. Please respect me, when I reply, that I can't answer all these mails individually. I have a full time job and spends several hours every day working for OpenOffice.org in Denmark.
I can also recommend this blog (Solveig Haugland): http://openoffice.blogs.com/
Most questions I get is about two issues: Installing the Danish spellchecker and reading docx files.
Regarding the Danish spellchecker:
I expect the Danish spellchecker to be pre-installed with OpenOffice.org 2.4. There are several discussions about installation on the Danish support forum about this. And yes: there are still some problems.
Regarding handling docx documents:
Ask the sender to use an international acknowledged file format like ODF. And subscribe to the Danish Newsletter (mailto:firstname.lastname@example.org?subject=Tilmeldingen%20sker%20ved%20at%20sende%20denne%20besked).
I'm trying to keep up with the latest news every month (Read older issues: http://da.openoffice.org/servlets/BrowseList?listName=nyhedsbrev)