TNX for your answers.
I can check it in registery:
" HKEY_CLASSES_ROOT\Word.Application\CurVer " ...> Word.Application.12
that have Microsoft Office Word 2007 installed or not.
But i want to know, has Microsoft Office Word engine for using during install application as a prerequisite?
Note: Microsoft Office Access Database has engine for it , you can see it here:
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=C06B8369-60DD-4B64-A44B-84B371EDE16D&displaylang=en