@Franko
Actually lawyers tend to make Trademarks. "Windows" is not really possible to trademark, it's generic and describes a part of a GUI. But try naming something computer related "Windows" and you'll be hit seven ways to sunday by MS lawyers.
Also once the Trademark is officially in the Trademarks database it's far harder to dispute it. Really, you are fighting a fight that would be difficult to win. AsiaRIM (who say they own the Commodore name) are incorporated in the EU. Pick your battles carefully.