I'm trying to run a training course from CD rom on Windows XP with SP2 installed. Its giving me an error dialog box: Title is (Unknown Application) - Security Warning. Then it says 'Windows has blocked this software because it can't verify the publisher. Name: voxacm.CAB Publisher: Unknown Publisher'.
The dialog box only has an OK button and when I press this nothing happens - a video screen appears but nothing plays and the app doesn't run. Its an old app but should still run.
How do I override this security feature to allow me to use this application and why am I not given the option?