You need to extract the .rar folder using winrar in order to play it.
you say that all the time dave i think we get it
explain how to do that. that line of text is not obvious you know.
how to do that is the question dave.
edit: its says the file is corrupt the pak file
You download winrar, it's an unzipping program. Once you have Winrar on your PC, you can unzip .rar folders by right clicking and extracting the .rar to turn it into a folder you can access.