Waldemire, when you install the application you are usually presented with a registration screen, if you don't get an error on registering then it is a legit copy you purchased. if you can get the updated from the manufacturer's website then you have a legal copy by thier standards. you should be able to get replacement manuals in a language you are more competent in from the manufacturer. I'm sure E-on software would have no problem sending you a copy in pdf format in english if you asked them. ~wandering off to bed to try to get rid of this cold~