How to ask questions?
"I downloaded XYZ.zip from www.wherever.com, how do I install?"
Best to specify so people don't have to guess, I'm gonna guess you're talking about the bonus pack link from the "surprise" thread;
ftp://largedownloads.ea.com/pub/railsimIf that's the case, the readme.txt is a good place to start, put the setup.exe file in a temp folder along with one of the .rpk files and double click on setup.exe.
If that's NOT the one you're talking about, you'll have to specify.