what have you already tried?
can you show some code?
"Bob Bowker" <[EMAIL PROTECTED]> wrote in message
> I have a large binary file (50+ megs) ... I want to read the first 1k
> bytes, make changes, and write a new file with the new 1k bytes plus the
> balance of the original file unchanged.
> I've tried several different ways of doing this, but nothing works, and
> out of ideas - any suggestions as to the sequence I should be following?
> Thanks --
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