The 5-5-5-15 isn't bad while not being the faster 4-4-4-12. But you'll note that the first three digits always remain the same. That can save you some problems there.
Nice little worm got on heh? Once you run a good system wide sweep and even look over the tutorials in the other section if you need further help Virus - Spyware Protection / Detection - Computer Forums
you should be able to see a fresh install of Nero go back on.