Handling a file like wifidrivers.rar usually means you are trying to install or update wireless drivers for a computer that might not have an internet connection.
: Right-click wifidrivers.rar and select "Extract Here" or "Extract to wifidrivers/" . wifidrivers.rar
If there is no "setup" file, you may have raw driver files (like .inf or .sys files). Handling a file like wifidrivers
after the installation finishes to apply the changes. wifidrivers.rar