I have a .msi file and I need to see it's PackageCode. I have tried to find it using Orca with no luck. The .msi file ungrades a product that is not installed on my system, so I cannot run it to see what it puts in the registry. I would expect Orca to show it - maybe I just don't know where to look.
The package code is shown on the Summary Information dialog: View|Summary Information.