How do you know im not using win2000 ? actually they say several times no copy protection

direct from hompage
The year is 2225. The reckless humans have formed a coalition to defend themselves from the rising power of the evil Drengin Empire. The galaxy is about to be set ablaze but there is something far worse out there than each other...
* Play as the Terran Alliance or as one of 9 alien races -- or create your own
* Design your own ships both in how they look and how they function
* Sophisticated diplomatic engine makes sure politics takes a center stage as well
* Watch your designed ships and fleets do battle in GalCiv II's state of the art 3D engine
* Play stand-alone games with randomly generated galaxies, preset scenarios, or a multi-mission campaign that provides the back story for the game
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No CD copy protection. Once you install, you never need your CD again. You can even use the included serial # to re-download the entire game from us years from now.
Now at a store near you! Or you can purchase and download the game right now while you wait for your box to arrive. Want more info? You can read the wiki here. Gamespot review.
Just got it? Check out the Beginner's Guide. Get the free update to 1.2 (and other goodies). The Dark Avatar Expansion is coming.