It should be right after the translations folder (at least it is on my Win7 pro installation). I'd suggest checking the zip file via a directory listing to make sure its in the zip (and try another download if its not). I used the open source 7zip package to unzip it as the built in zip doesn't seem to be able to extract it for me. If the .exe is in the zip file then look to your AV logs to see if it got marked as a virus (in which case you may need to shut down you AV software before installing), given everything except the exe is there, this is the most likely problem I expect.
Peter Van Epp