IOError "decoder jpeg not available" on Win7 (2nd try)

I sent this to the list a week ago with no result.  2nd try.

I am running Python 2.6 on a new Win7 machine. I have installed PIL from 
the PIL-1.1.7.win32-py2.6.exe binary.  I am trying to resize a jpg.  I 
get the IOError message "decoder jpeg not available" when I call the 
save() method:

im = Image.open(infile)
im = im.resize(newsize,Image.ANTIALIAS)
im.save(outfile, "JPEG", quality=90)

I have scanned a year of back messages on this list without seeing any 
relevant advice.  I have used PIL with the same code on other Win32 
machines without problems.  Since it is a prebuild binary, the jpeg 
decoder should be present.

Help or advice would be appreciated.

David Flory
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