Bypassing PB

I have been looking for this answer for a while now, I know that in some hack shields, they basicly make an application run to replace pb, and give fake outputs. May someone explain to me how the bypassing of pb works....Its just i'm so board I wan't somthing more fun then just writing process memory.

i think it is smink like a security program (like AVG, zonealarm, ect) that basicaly denys pb permission to scan your HDD. Not sure though!

to bypass pb i think you can emulate it but going through by debugging it and looking for the PB scan code and either Jmp it or loop it i think you can bypass PB but you then have to compile it in either ASM or using a ASM module in VB