Hi there, Welcome to the fourms. To make an Intro. You must use an AVI file within the engine. Make your own AVI movie with any moviemaker or 3D animator program. Place AVI into the videobank but make sure you use the right codec otherwise it will be choppy and will not run or it will crash FPSC. No Gifs are supported. Only this wonderful thing called decals. Read up on everything about 2D animation that you can.
Use Painshop Pro,Adobe Photoshop,The Gimp. There is a program called decalmaker4.1 learn to use it. No, You can not have texture animation like in QuakeII, QuakeIII or even Doom3. But after you learn the basics you could fake it. If you bought the full version of FPSC you will not have to worry about the FPSC title showing up in your setup.
Hope that helps. Sml DV.