You can use this form to submit an inquiry regarding a technical issue and will usually receive a reply within one business day. Using Search in this Knowledge Base can help you find many articles explaining how to use WinZip applications. Here are some links to help you get started:
Quick examples of how to unzip with WinZip
Quick examples of how to zip files with WinZip
WinZip Mac Edition (knowlege base section)
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You can also send an email to Technical Support. Answering the four questions asked above will almost certainly result in a faster solution to any problems.