To install the Bitish Dictionary:

1. Copy the seven files found in the folder "British Dictionary"
2. Locate and open your "YW" folder.
3. Paste the copied files.
4. When you start-up Yeah Write, the new dictionary should be there.

If you want to spell check with a different dictionary (the Eglish Dictionary is the default), select Dictionary after clicking on Spell (or pressing F10 with the document window open).  You can select up to two dictionaries (which is useful if portions of your document are in different languages, or if you want to use the medical dictionary with an English dictionary).  You can select different dictionaries for different tabs (so you could have a tab for your English documents and another for Spanish documents).