Well that sounds like what I'm looking for.  All I want to do is to be 
able to transfer the script onto another computer (which doesn't have 
Ruby installed) and run the script.  From what I've seen by playing with 
it on my computer, it doesn't seem to be as simple as just copying the 
".rb" file.  But thanks a lot for the comment, I'll have to check out 
that book you mentioned.

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