>I am trying to use VFP 6.0 Setup wizard to deliver a software update. Along with new files, I need the specified files to be installed OVER existing files on the clients machine. When I tested it, looks like when files exist on client machine, the files are ignored and not over written. Anyone know how to get this to work? Thanks in advance.

In the case of executables and .DLLs, a newer version number would be required to force an overwrite. You may need to use a post-setup executable for updating other files.