I do not know of a hard plastic case, but you may find a reasonable solution with the softer plastic screen protector. I got mine from a tip on this bulletin board - at http://strongengineering.com/miva?/M...Code=SP+Compaq
also, there is a thread on this board about using double sided tape on the screen to help keep the screen protector in place - beyond what comes with the screen protector itself. I did not do that, but should have.
Good luck and have fun!