The tab moves erratic if I have not typed characters before tabbing.
And the tab only moves the length of the number of characters I typed before hitting the space and tab keys. So if I type ten characters and then hit space and tab, the tab moves ten spaces, and if I type one character and hit space and tab, the tab moves one space.
So, it's not working but I can live with it. And I do use Win7 64 bit, though.