I will give you my own script since I've heard the one already on the forums doesn't work most of the time. (I am not sure, however.)
I'm pretty sure she use the animation script, not the scrolling due to how it an whatnot. Here's the code I took from one of my presets.
Red = Important sections
Yellow = Speed. Change to what ever you'd like. For example, changing to 3.0 would be slowish (I think frames change every three seconds), however 10 would be slower.
You can add as many frames as you like. We need an animated code in FH since it does not recognize .GIF files. Here I have eight frames.
material preset_2_bodyMatL
{
receive_shadows on
technique
{
pass
{
texture_unit
{
anim_texture preset_2body1.png preset_2body2.png preset_2body3.png preset_2body4.png preset_2body5.png preset_2body6.png preset_2body7.png preset_2body8.png 70.9
}
}
}
}