ok this is my first tut so bare with me poeple :D
ok first step is to make you sig and everything
and make sure your text or whateva u want this effect to go on is a rastrized layer not just a text layer
http://img219.imageshack.us/img219/9881/tut11bg.jpg
use the settings shown
Now make a new layer(ctr + shft + n)
and make a small gradient like so
http://img219.imageshack.us/img219/2156/tut25nq.jpg
and then u should have this
http://img219.imageshack.us/img219/3499/tut35dc.jpg
then when you have that hit ctr + g and switch the blending mode to lighten
then move the layer ova the text so u can see the light ova the text like so
(i made mine red so u can see it)
http://img219.imageshack.us/img219/6207/tut44ge.jpg
now switch to image ready there should be a little button at the bottom of the tool bar as shown below
http://img219.imageshack.us/img219/6797/tut4a5bk.jpg
now duplicate the layer in the animation window
select the first frame and drag the layer with ur gradient to the left so u cant see it
then select the second and drag the layer with the gradient to the right so u cant see it
and reselect the 1st frame
then click the tween button
http://img219.imageshack.us/img219/8216/tut56ds.jpg
and use these settings
http://img219.imageshack.us/img219/1684/tut68qj.jpg
(15-20 frames works good doesnt have to be 20)
hit enter and bam your effect is complete.....
http://img166.echo.cx/img166/9779/end5xw.gif
heres an end picture
please comment on this its my first tutorial tell me what i can do to be better