I would have installed 1.5 yesterday if I had known that the game wouldn't require the disc after the patch. Today, I downloaded NoCD, and after installing 1.5, I found out that it's not needed. Now I'm going home and will install 1.5 there. I hope my daughter doesn't kill me for making her replay the mission (she's playing through the first campaign).
I downloaded the patch yesterday from the Nival server.