Image Comparing Software

Before I reinstalled Windows I used a program called Image Comparer to find duplicate images. It was a pretty awesome program.
Anyways, I installed 2.3 and I can't find a working patch/crack/serial for it (surprisingly the one from SnD didn't work)
Anyways, I'm looking for a program very similar to Image Comparer, as in, the methods it compares images and the UI.
Or a working crack for IC.

In before b& etc.

>>4
Oh and uh, comparing images just based on pixel colors isn't going to do much for me. There are duplicate images that have different colors. One image will be brighter, the other darker in some cases. Or, one image will have a watermark in the corner while the other doesn't.