I'm sure if you contact any Siemens center, that they can tell you where to buy an authourisation for this programm, normaly it's on diskette delivered with the software you buy.
We all know that feeling, but you'll have to do what we do in that case: buy it. Only older software is sometimes released to be distributed for free.
If you're not prepared to pay for what you want (need), then you make things harder for the rest of the world. Usually people with this kind of attitude over here find themselves in court sooner or later. How about over there?