Hi, I googled a bit but could not find answer for this. I have thunderbird installed in Max Os X but MS office installed in Windows. If I double click a file in Max Os X "Finder", it automatically opens the document in Windows under MS word. Great! But in thunderbird, if I download a Word .doc attachment, Thunderbird asks me which application is should use. I do not see MS Word in the "Applications" folder of course but also do not know how to choose the Word application from Windows. Any ideas? Thanks Andrew