Got to Documents\My Games\XCOM - Enemy Unknown\XComGame\Config. The file you want to edit is XComEngine.ini - to remove the intro movies just delete the lines "StartupMovies=Logo_2KFiraxis", "StartupMovies=UE3TechLogo" and "StartupMovies=LogoLegal_PCConsole". For the extra options I think editing a .ini is not enough, but you can get the Second Wave mod from XCOM Nexus.
Online gamers are the most ludicrously entitled beings since Caligula made his horse a senator, and at least the horse never said anything stupid. - L. McKinney