should be as easy as clicking them to open, I guess it your computer doesnt automatically unzip the files you should use something like winzip, from winzip.com, after you unzip this file a new file-folder will come up and there should be 3 documents(files) which you store in your RO folder.
Yes download winzip at www.winzip.com download the trial version, its unlimited. Then you need to upzip the file directly into your RO folder (usually its C:/program files/gravity/RO). You should be able to connect that way. If it asks for overwrite, click yes.