Help Me Find A Solution?

I have windows 7 Ultimate as an OS. 32-Bit. I have tried many hacks and many different injectors (such as Red Dragon (Both Versions)/ PerX / and i don't remember the rest) but they all seem to inject successfully except when i get into the game the hacks won't appear when i tried to press the activation key. Usually "Insert" or "Delete" I have installed DirectX and Framework 4 Extended installed. I don't get the missing Dll errors either so i'm really confused on why won't the hacks work for me yet work for people who are running Windows XP. Please Help
P.S. I am running as Admin