I think the "International" part is what's screwing things up.
OK. On Vista, the language bar should display both the input language (on the left) and the keyboard layout (on the right). Click the keyboard layout (US-International), and select US instead.
Joke mode; But I don't WANT to type in American!!!!!!!
If you hit quote then space, does the quote show up?
The old sitcom "Leave it to Beaver" was very funny (and made you feel good about life).