Installing an interfaceInstalling an interface is really easy. Unzip the file and copy it as a whole toC:\Program Files (x86)\MTA San Andreas 1.4\skinsSkins don't show up? Still got a MTA San Andreas 1.3 file? Try saving it to:C:\Program Files (x86)\MTA San Andreas 1.3\skinsStart up MTA and there it is! Though, you might have installed MTA somewhere else. Locate it and go to the skins file and you're done.