I followed the directions
here and had no troubles.
つなみ -- that should show up in hiragana. Basically, make sure you've got the right keyboard set up in the Language bar settings. I originally picked "Japanese keyboard" and nothing happened - so then I picked the Microsoft IME one the website showed, and it worked fine for me. I just had to switch to Japanese input, then within that the language bar was default set to "Direct Input", but I had to switch that to "Hiragana" and then start typing and it did the rest.