Apple Bluetooth keyboard displays wrong font/characters.

Hi guys!

I have an Apple Bluetooth keyboard. I used it for a while with my Macbook; but when it began screwing up, I ditched it for a Logitech Wave keyboard (which I love, BTW... Highly recommended!).

Anyhoo, tonight, while cleaning my room, I decided to see if it was still messing up. Sure is.

Basically, it has fresh batteries and is connected no problem (tried "reinstalling" too). When I type, the wrong characters appear on the screen. Like the "B" will be a "4", and a "ENTER" will display a "$" and so on.

Any ideas what's wrong?