All the instruction are for one language.

But I am bilingual (English and Spanish) I want to be able to switch the spell check from english to spanish on WINDOW LIVE MAIL without changing the default. So far I have changed the default to spanish.  Yahoo have a super nice way; they have AUTO-SELECT SPELLING LANGUAGE in which select the language we need.  For what I read about this issue, you are not making easy for your customers.  You better fix this because the next time I need to email in spanish or any other language will be with YAHOO