You need to download and install the executable first, then unzip or unpack the driver file. Sorry, don't have the step-by-step instructions any longer. The fellow's site that I got this from hasn't been working. Good luck!
The following files are found inside the driver download file.
|EditedDrivers_and_more/wrar340.exe||1.2 MB||6 Aug 2005|
|EditedDrivers_and_more/EditedDrivers.RAR||2.7 KB||6 Aug 2005|