Have a look at winzips command line http://www.winzip.com/wzcline.htm
>Hi Andrus,
>
>We still haven't a solution for this...
>
>As an alternative to the zip format you also can look for a creating CAB routine, if this can fit for you.
>
>They have a free ActiveX free, is at
>
>http://www.greeneclipsesoftware.com/eclipsecabinet.html
>
>Hope this helps. But I'm also still looking for a free ZIP that can be created inside Fox.