Oh boy, a "screensaver" .exe from RapidShare. I can't put my finger on the reason, but I feel a strange resistance to running that on my Windows box. 😛
Oh, and it won't run on a Mac. That is probably a good thing.
That's not a screensaver. It's promoted as an "erotic screensaver", but it's a trojan that would infect a Windows system. There's no screensaver in the .exe. It won't run on Mac OS X, thankfully. You should delete it and forget about installing any programs that you get from porn sites.