I haven’t used Orca to edit MSI files since I found Camwood appEditor around November last year. Since then though, appEditor has become has become InstEd and it’s even better than its’ predecessor.
This is a great way to edit MSI files and create transforms, being able to see the MSI with the Components and Features views lifts this tool far above Orca.
There’s not much point for me to go through all of the great things InstEd does, because it’s completely free, so grab yourself a copy and take it for a spin.
You’ll also find some great posts on editing MSIs and Transforms at the InstEd blog too.