Yep, InstallShield apps almost always can be fed a setup.iss file to make them install silently. Running GUI ("is this on my screen") checks is definitely hackish, wouldn't go there. If setup.iss doesn't work for one or more of your programs, I'd suggest you see if you can get them fixed, as this isn't your problem, but a problem with those installers.
in reply to Re: detecting activities of scripts
in thread detecting activities of scripts