How to change the default on screen keyboard on Optimus V to Dvorak?
Once installed, activate it by going to
Have you looked on the Market? There seem to be a few Dvorak keyboards available.
You should probably shop around and try as many as you can find. If you don't know how to switch to an alternate keyboard you've installed, look here: http://www.simplemobilereview.com/change-your-android-soft-keyboard-system/
If you're looking to change whatever keyboard you use now to the Dvorak layout, that may be harder. It would depend on which keyboard you're using.