Cyberlink Power2Go Iso burner

I recently had to re-install windows vista home pre. 32-bit os. and I have burnt several programs for backup never thinking to back up the program burner itself. any way i finally found the program in the windows.old file under Cyberlink but when i open and try to install power2go it prompts me for activation key and more specificly a CD- key don’t quite understand but any help would be fine if was originaly on my emachine w3653 puter