Fedora :: Can't Change OpenOffice's Interface Language To En-gb

I've been having a few problems with OpenOffice.Org and the language settings.

I'm using the latest Fedora 11 and OpenOffice.Org 3.1.

When trying to change the interface language from en-us to en-gb there isn't an option for en-gb at all in the drop-down, despite me reading that other people have been able to switch the interface to en-gb. This doesn't matter that much, since it's only a few words but I think it might be affecting another issue of mine.

Despite having en-gb set for my dictionary settings, I still get the Americanised words. Stuff like: internationalised vs. internationalized, colour vs. color. I've even installed the Oxford English Dictionary extension but that doesn't show up in the dictionaries.

Edit: I've tried searching the repos. for en-gb langpacks but I can only see the general 'en' English one. Yet I can see there's an en-gb lang pack on the OpenOffice.Org website [URL] but I thought you're meant to use the repos. where possible.

Edit 2: I feel a bit stupid now, it's under uk not en-gb. 'openoffice.org-langpack-uk'. Still doesn't solve my dictionary issue Americanised spellings should come up as red underlined.