How do I disable the on screen keyboard? I have a USB keyboard attached I have a ZeniThink C91 using Ice Cream.  I also have a case that has a USB keyboard.  How do i disable the android Keyboard so only the USB keyboard is active?  Ice Cream 4.0
Null Keyboard is what you want. I do this same thing with my bluetooth keyboard. It does require you manually switch the input method each time, but keeps the pesky on-screen keyboard from popping up.

Another option I've used is to use the method described here to program one of your keys to a Back button, which you can press to remove the on-screen keyboard each time it pops up.