>Does anyone try to create DDL with WinZip?
>
>Because I try to zip up data files, but I don't know how to know when
>WinZip finished the job. I try to detect the file existence by FILE(),
>but this is not reliable when the data files are so big.
>
>Do anyone give me advices to do this task?
>
>Thank you in advance!

What is DDL? If you mean DDE (dynamic data exchange) I don't think WinZip supports it (or OLE automation, for that matter). That is why my office bought DynaZip (www.innermedia.com). There are other, cheaper products, usually .DLLs, that will do the job, but they aren't as well supported or documented as DynaZip.