AA won't install correctly....

  • alright, I downloaded the file which took about 4 hours. then when I went open it it said it was installing/extracting the files. Then my computer said it was installing it, but then it said it couldn't install... also tryed to use the utility package but it said that AA wasn't downloaded on my computer. is there anything I can do to get this game running? I'm using windows vista... if that helps. i've downloaded it twice and gotten the same message. can anybody help me?