scrambling keyboard keys

[Booth Martin <booth@xxxxxxxxxxxx>]

scrambling keyboard keys.

We're thinking of a simple phrase obscuring process.  The need is for 
obscurity but not for a full blown security process.  xlate seems to 
round trip for us just fine, so this is probably the route we will follow.

What I would like to do is find a simple way to scramble the letters and 
symbols so all are used once and only once.  I can do it manually of 
course but I am wondering if anyone has a suggestion on how to scramble 
the keyset randomly?  (I'd like to do it 20 times or so, and fill an 
array with the assembled mixed sets.)