Defense Grid

Thanks Hidden Path, in all the years i've never wanted Steam on my PCs - but now I seem to have it. WHY DON'T YOU OR D2D INFORM PEOPLE THAT THEY WILL HAVE TO INSTALL UNWANTED 3RD PARTY SOFTWARE IN ORDER TO UNLOCK AND PLAY THE FULL VERSION???? I've read the other posts now, but obviously it's too late.......the most annoying thing actually is the fact that if i'd bought it directly from frickin Steam it would've been cheaper!! I'm too angry to say anything else......