uhh, albert einstein's theory of relitivity doesnt quote that if u moved at the speed of light u would go back in time, it says that if u move at the speed of light time would stand still because for you to see an image, the light reflected from it travels to you at "surprise" the speed of light, if u were staring at a clock, and moved away at the speed of light the clock's image would stay the same because you would move away at the same speed that the image is being sent and it would then seem time is standing still [img]i/expressions/face-icon-small-smile.gif[/img]....then again i could be wrong lol