how do you do this simple effect in photoshop!

How in photoshop do you do this effect please? Below in the picture the background letters made up of like solid circles????

no one, please, come on, someones got to know?

Those are Techno Dots and the coolness is -> they are easy to make, so I found one tutorial on the internet:

http://home.zonnet.nl/epragt/tutorials/photoshop/text/technotext/index.jsp.htm

And that should about cover what you need.