Tienes que bajarte un add-on para eso...
Chequea esto:
The WinZip® Command Line Support Add-On lets you use WinZip's power within batch files, macros, and other situations where you have a specific task and would prefer to accomplish it quickly or automatically, without using the usual WinZip graphical user interface.
A copy of the WinZip Command Line Support Add-On is available from the Web page
http://www.winzip.com/wzcline.cgi.
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