Requiring advice from crackers please!

[ricardido]

Hi all, thanks for your time.
Does anyone, or is anyone prepared to give help on how the .exe files for games can be altered for them to remove cd checks? i see in many cracks that lines of code etc are removed or altered and wondered whether there are certain things that are consistent or recognisable to the trained eye?!!!
So if anyone could point me in the direction of where i can learn about cracking exes manually i would appreciate it!!
Ricardido!!!