"James C. Ahlstrom" wrote: > ftp://ftp.interet.com/pub/pylib.html I just changed zipfile.py so that regular zip compression works. And if zlib is available, its crc32() is used instead of the Python version. I should mention that the current code rejects zip files which have an archive comment added to the end. Accepting them would require a search, and I am not sure it is worth it. JimA