ya that's not working... mighty mouse can sync... but not the keyboard. bluetooth manager does "see" both devices however. i believe the problem starts when vista demands a passkey for the keyboard. i don't know what the passkey is, so vista assigns one to it automatically. it assigns it, but it doesnt work. vista, however, doesn't demand a passkey for the mouse and i'm able to sync it with no problem.
Have you solved this problem? I have exactly the same issue. My wireless mouse works fine but can't seem to get the keyboard to work. Looked on apple web page and found infor about changing driver for bluetooth device. BUT no file existed in Vista. Has anyone figured this out?