I'm trying to give my users the ability to backup their data file in an
application without having the app open a dos window.  Are there any windows
based utilities or functions available for compacting and uncompacting afile
from within a VB program?  Anyone have any sample code on how to do this?

I was using PKZIP up until now, but that can't handle long names, nor can the
beta version of WZZIP, which also seems to window out to dos.

Any ideas?

Thanks in advance,

F.X. Moon