Woutvn

I downloaded the Pitt from games for windows live, after that is said it was installing, after that it said it was installed, but i can't check it in data files. I tried looking for the file where it was dowloaded so i could put it in my fallout 3 data file myself, but i can't find it anywhere. Anyone got an idea where it could be or how i could install it? Thnx for the help Wout. P.S. I run vista