Look at http://www.lostpassword.com
You can unlock it if you want. Still PDG (pretty darn good) for most things.
You didn't tell how secure must this be?
First, I wish all at the 'CNET' a very happy and prosperous New Year 2005.
Now my question is that how much security can one expect out of a password protected zip archive?
Isn't their any tool that can crack password of an encrypted zip file?
And again, what should be the minimal number of characters to be used to protect a zip file to the utmost extent?