How do I locate my registration code on my presently installed and registered version of VOX ATC?

I don't believe you can. If it is properly registered you will get a message saying so if you click on "register" in the registration utility. When you originally register the software a key file is generated but it doesn't appear to be viewable in windows.

Thanks, will trust that when I upgrade to the next version. Once I delete the current version to upfrade, I hope it is saved somewhere.