Note: This tutorial was done using Adobe Photoshop 7.0
Open a new window with:
Width:2pixels Height:2pixels
Resolution: 72 pixels/inch
Mode: RGB color Contents:Transparent
Zoom in the window, so that it is big enough for you to see.
Next, select the half of the image. [you can do it by setting
Rectangular Marquee Tool (M) to Fixed Size,
Width:2px Height:1px]. And fill it with grey, ALT+Backspace.
Finally Deselect - Ctrl+D.
Now Select all the image - Ctrl+A, and go to Edit
> Define Pattern Once you click you will see your
pattern you have just created. Name it and press OK. We have
finished the first part.
Open any image you like. We are going to apply the effect
on it.
Select the Paint Bucket Tool (G).
From the Options Toolbar select Pattern for
the Fill menu and choose your pattern from Pattern drop down
menu. (If you don't see Options Toolbar, Select it from Window
> Show Options)
Make a new layer. Go to Layer > New > Layer.
While Paint Bucket Tool (G) selected fill
the new layer with your pattern.
Finally reduce the Pattern opacity to 40% and you are done!
(You can apply Overlay or Lighten
for the pattern layer as well, check it out whichever suits
your needs)
Web2.0 Bookmarks - Social bookmarking is good, but old skool way of hand-picking sites is better!
That's what we do best, collecting the coolest WEB2.0 sites. click here
Open a new window with: 
Zoom in the window, so that it is big enough for you to see.
Next, select the half of the image. [you can do it by setting
Rectangular Marquee Tool (M) to Fixed Size,
Width:2px Height:1px]. And fill it with grey, ALT+Backspace.
Finally Deselect - Ctrl+D.
Now Select all the image - Ctrl+A, and go to Edit
> Define Pattern Once you click you will see your
pattern you have just created. Name it and press OK. We have
finished the first part. 
Open any image you like. We are going to apply the effect
on it.
Select the Paint Bucket Tool (G). 
From the Options Toolbar select Pattern for
the Fill menu and choose your pattern from Pattern drop down
menu. (If you don't see Options Toolbar, Select it from Window
> Show Options)
Make a new layer. Go to Layer > New > Layer.
While Paint Bucket Tool (G) selected fill
the new layer with your pattern.
Finally reduce the Pattern opacity to 40% and you are done!
(You can apply Overlay or Lighten
for the pattern layer as well, check it out whichever suits
your needs)
Easy Huh?!
