Image based pixel detection?

[Killuminati]

I was wondering if there was a way to scan a screen for an image then click on the co-ord's where that image is, I wish to implement it in this format.

BEGIN script
DEFINE variable (This will be 0001)
FIND a part of a screen which resembles an image which represents the first digit out of the variable then click the co-ords for it.
LOOP this task with the other digits
Increase variable by one
REPEAT until a certain pixel is found then save the variable to a text file?

If any-one can help it would be greatly appreciated

Edited September 25, 2006 by Killuminati