Cannot launch starcraft II (starcraft 2)

I installed the dx9 version of starcraft II and the app runs fine. but when I try to run starcraft II I get an error saying that my os is not supported. is there farther configuration i need to do? am i missing something obvious?

I actually figured it out. i will post the answer for people in the future. i just had to click to edit the game settings and tell it to run in 64 bit