I unzipped the file but it still won't let me play it. It shows up as a .rar file. Is there a program I need to download to play it?
no you did not unzip the file. you need to download winrar, a file compression program.
from here: http://www.rarlab.com/download.htm
install that, then unzip the file.
i guess i could just use winzip, since it's implemented in windows by default, but then the download size will be an extra 100mb