I have packed my application for distribution using the Package and Deployment
wizard. Application is created in VB 6. When I am trying to install to some
systems it’s giving me a message

“Setup cannot continue because some system files are out of date on your
system. Click OK if you would like setup to update these files for you now.
You will need to restart windows before you can run setup again. Click cancel
to exit setup without updating system files.”

When OK is clicked it will upgrade the system files and installs the application.
But some of the clients who are using some older programs are concerned that
if the system files are upgraded and if they still need the old system files
what’s going to happen.
Is there any way I could be able to know which system files are going to
be upgraded so that I can restore the older version in some place? If you
guys got any idea in this please help me out in this.

Thanks in advance