>>>Windows XP uses ZipFldr.dll which is based on Dynazip libraries.
>>
>>Are you saying that we need to own a copy of Dynazip if we want to use the approach listed in this thread?
>
>IANAL but I would think it it's legal to use interface provided by OS.
>
>>Also the whole point may be mute, because AFAIK our server is not Windows XP, but Windows 2000.
>
>Win2K doesn't have built-in ZIP handling.

Thanks, Sergey. I've added the functions to our common library (BTW, whom should I attribute them?) and now we just have to try zipping / unzipping. I've tried unzipping from my local PC (Windows XP) and it worked nicely.