Hi. I just downloaded windows 7 from the microsoft online store and I can't figure out how to install it on my macbook pro. I have already partitioned my hard drive using bootcamp. When I purchased the software, it gave me three downloadable files, and I downloaded all of them. One of them was titled setup box 1, and another was titled set up box 2, when I try to click on either of those, it says there is no default application specified to open the document. How do I install it on my macbook pro? Thanks!