Hi Michael,
My initial thought was to suggest to just tick the "Run the program
once the installation exits" checkbox for the Run dialog. Upon
reflection I realized that you get SB5 to remove the installer and
suppor files etc so setup.exe would probably lose access to the other
files. But if Friedrich's suggestions don't work suitably then you
could still go this route by getting the setup.exe to do the tidying
up perhaps even by getting it to call the uninstaller.
Just a different perspective.
Best Regards,
Geoff Spillane