In case you don't have them, go to Steam and install those now. This may take a moment. Once you have them, you can go on with your mod. I'm assuming you came here because you already made some maps and want to have your own menu and whatnot... but just in case. You need ...
If you open up any of the example maps, you can look at the Kismet setups for that map file. You can also open up Matinee sequence that Epic created for that particular environment. There is a lot of information you can reverse engineer from just by looking at Kisme...