You can literally just double click the zip and it'll open, then copy and paste to the above location. Or right click the zip folder, go to "Extract" (or similar) - it'll prompt you for a location to "unzip" the folder to. Do that and go to wherever you unzipped it (default should be wherever the zip folder is) then copy and paste as normal
If you're online you can request people send you setups, and if they do then press "n" until the player list comes up and you'll see a green "S" next to their name - click it, name the setup then it'll go straight into your garage
4) Any "mods" - modifications to the Live for Speed exe, must be discussed with a moderator before being released on the forum. If a mod is approved by a moderator, it may then be released in the appropriate section of the forum. Please do not contact a developer as we do not support mods and do not have the time to deal with them. Any mods which change the shape of a car model, or which allow online cheating or circumvent HLVC, will be rejected.