I am going nuts! We are rolling out Norton AV and doing away with McAfee AV. But to do it by script, I want to check and see if one or the other is already installed (over time, some machines have gotten Norton already). The problem is that there hadn't been a standard location for the install of McAfee or Norton.

Is there away to check if a program is installed if you do not know the path (either on C or D)?

Thanks for any help!