Step 1 :
First start off with a basic sig e.g.text and bg
Step 2 :
create a new layer
Use a gradient
like the ones
adam uses
now pull your gradient tool and let go
Step 3 :
Select your magic eraser
and rub out half of the gradient till you think its a nice shine
Next go to blending options coler overlay and choose white
now set the optacity to what ever you want
Step 4 :
go to window (next to help)
And select animation
now you will only have one frame
make sure you have selected shine layer
now make a new frame and move the shine to the right or to the left
keep doing that until your shine is on the other side gone
Step 5 :
Now save as web&devices
and you will have an animation streak
Pics are coming soon