run this one-line file on Windows 2000:

import xml.etree.cElementTree

It generates the message:
usage: copy.py inputFile outputFile

If you give it a couple of file names it at least reads
in the first.

--Th

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Could you provide more information? The string "usage:
copy.py" exists nowhere in the Python source distribution,
so I think it must be something on your end.

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OK, the text is coming from a script 'copy.py' that is in
the same directory as the file with the import of
xml.etree.cElementTree.

If I delete my copy.py (and it's associated copy.pyc) then I
don't see the message.

I just installed 2.5b3 and still get the same behavior. 
Somehow the import seems to be running my copy.pyc script.

--Th

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This is because the ElementTree package imports the copy
module (which is a Python standard module). It's the same
effect as having an "os.py" file in the current directory
and doing "import os".