Hi Boris!

Thanks for the advice, I will actually use the DLL you suggest instead of a ShareWare one my client has.

Actually, the reason I mention a Windows API is because I noticed in XP, you can search for a string in a ZIP-file. It appears that Windows XP provides the funcionality I have already painstakenly programmed in VFP using 3rd-Party stuff. What I'm actially doing is using RegEx to search sub-folders for files with a particular pattern, right now I have to unzip ZIPs into individual subfolders, scan the extracted files, and clean up. If XP can do this already, I'd like to use it.