Dropbox is just a website where people can upload files.
Since I uploaded that file myself, and I got the file from the link Mikael posted, I guess you have to ask yourself whether you trust Mikael (who developed the Carol Reed games) and myself.
If you're worried, scan the file with your antivirus.
Thanks for the explanation! I didn't know all the particulars of who uploaded what to where, so understanding it was a collaborative effort between you and Mikael makes it a lot easier on my (previously ID-thefted) mind! Thanks for all your contributions to this site, by the way. I may not post a lot here but I lurk quite often, and I always enjoy your input and announcements!
Cheers! Mike (the Wino)