I'm using a kix script to set drive mappings and Office data/template paths, I also need it to set the default language, does anyone know what the key for "Default Language" in Office 2000 is, and what the value should be for "English UK"?

I don't know, but it should be pretty easy to reverse engineer using the freely downloadable REGMON tool from sysinternals. Just change the option and look at the REGMON log to see what settings got changed when you changed the option.

I don't know the answer, as I just got into kix, but I must throw in that kix scripts rock.