Could you tell me where can I download dictionary for Word so I will
be able to have suggestions about British Spelling and not American?
You don't need to download a dictionary. You just need to select the
text that you want in British spelling and use Tools | Language to
format it as English (UK). See also #2 here, for other methods to
format as English (UK).
http://word.mvps.org/mac/SpellCheck.html
(but note English (UK) is automatically installed with English, and is
already on your machine, no need to make sure it is installed).
You should probably also read the "Set the Default Language" section on
that page, for a quick tutorial in how spelling/language works in Word.
