is it possible to put an other language spell check in ms word while keeping the english version and how?

Answer 1

Yes, check this page it will help you understand how to do it http://office.microsoft.com/en-us/word/HA011306731033.aspx?pid=CH060843101033

Answer 2

yes, it doesnt remove it when you add a new spell checker, and there is also a setting which changes it automaticaly when it detects what you're typing.