HowTo Analyse copy protection?

I used a software a few months back to check the copy protection scheme used on a cd. I forget the name of the software.

What is the name? I remember the sceleton heads at the bottom that indicate how easy the protection can be copied.

Please let me know what that software is and where I can get it since my HDD crashed and I lost everything.

Later.

The program you are refering to is ClonnyXXL, get it Here
And there is a new one from [yAtEs] get it from Here or Here

Clony XXL is no longer being updated. Other good alternatives are Scout and YAPS. You can find many utilities that will help you here