Thanks for the answers. Would I just set the EncryptFlag to true and the EncryptCode to the password that I want and then zip the files? Do you have/know of any sample code I could follow?

>You set it with the "EncryptFlag" and "EncryptCode" properties of the control. I have the latest version, so I'm not sure when these properties were introduced.
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>PF
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>>Does anyone know if you can set a password for a zip file created with dynazip? If so how and what version was this first a feature in?