Do not use bad language whether abbreviated or not. - this is against forum rules.
You will have to take the problem up with Steam - they are the retailer and it is their responsibility to supply you with all the required information.
sorry, I was a little frustrated - paying 99,99 for a software that dosent work, would make anyone a little disappointed, but i was wrong, it works fine - i've talked with some from Steam and they helped me.. :)
Happy editing and if you get any problems or get stuck, there are plenty of answers on here - use the search first because it is highly likely a question has been asked and answered which is relevant.
Also please read this post to make us helping you easier