Yeah, when I teach an AdminStudio class I never even open up and InstallShield tool until the end of the first morning. We always start of looking at things with Orca. Always handy.
Do I create a new IS project for each application version?- Yes.Should I name my project with the intended version? e.g. MyApp 1.1.msi- YesOnce I have created and deployed an app with IS do I require that projects files to build a patch for the upate...
There is not an undo option.You could always just close without saving but, obviously, you would lose all unsaved changes.Or just add the component in again. You have the base MSI to refer to should be doable.
You should take a look at the MS info on the Service Control Manager Database (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/service_control_manager.asp).This indicates getting rid of stuff under HKEY_LOCAL_MACHINE\SYS...