is it possible to put animated textures into halo? if so how do you do it? if you cant can you tell me how to make a texture animate in game (do you have to break it up into many pics with slight diffs or what?).

I've seen it done like on the sniper rifles people make. I have a good guess on how they do it (Make a bitmap file and separate each picture with a blue border, which tells the game to continue playing the bitmaps, creating an animated bitmap sequence.), but I've never actually tried.

Maybe this will help? http://www.modacity.net/forums/entry.php?b=30

Depends on how you want it animated.
You can use the self illumination section of a shader_environment to achieve the effect to a certain extent.
Find the shader burned_ceramic or something like that ( its a hexagon pattern that changes colours)
study the self illumination section.