Hello!
I will talk to you privately about the screengrab
stuff. THANKS!
But here is something that I thought everone might
be interested in: if you want to have to images 
match up nearly perfectly (there is, of course, 
some distortion from the TV signal, etc), here
is what you do:
Open both images in photoshop.
Make sure layers are visible. If not, go to the
menu WINDOW-->show layers
If the two images are different sizes, select the 
larger of the two.
Copy.
Paste into the other image file (it will make a 
new layer if you are using a recent version of 
photoshop. If not, make a layer and then do the 
pasting).
Now, here is the clever bit: first make sure the 
top (pasted) layer is selected as the active 
layer.
Now, there is a little drag-down menu on the 
LAYERS window
which should now say :normal:. Drag this down
until it says :difference:.
Now CTRL-T (transform) and hold down the shift key
to shrink the larger image to exactly the size 
of the smaller one. You may have to rotate to get
it just right, since scanners are not as precise
for alignment as a pegboard.
Any more questions, just email me privately!
Ryo