I have no pictures... because it keeps freezing, but I'll get the example on if I can get to save it...
Here's what I did: (Well, tried to.

)
1. I created a new animation (350x20, black background)
2. Opened my image (space invader guy)
3. Copied and pasted the picture on the animation
4. Copied and pasted the first frame, and moved the pic over a bit further each frame.
5. Added a marquee text effect, and voila!!
NOTE: I'll add more detail later.

EDIT: Well, I got to save it:
