PIL question - saving JPEG

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I have a fairly simple Python program that uses Image and ImageDraw to 
create poll results on the fly.

Because PIL only supports 256 colors for GIF and BMPs are huge (in 
comparison)... I have opted to create JPEGs.

I have installed JPEG-6b and have checked to see that all of the libraries 
are in the correct, expected places.  But, I am still getting the following 
error.

IOError: encoder jpeg not available

Anyone with some PIL experience know how to get this working?  I really 
appreciate any help offered.

If you need more information, just ask.  I will be checking this post for 
the next few days.