Help: I need a good Duplication guide :/

hi all thats my 1st post here...
iv search in exploit section but i havent found a good guide for items dupli... ( for C3 ^^ )

PS: mods.. if u think this is a stupid topic delet it, sry for troubles =)

please help ^^ :D
thx all

I need one for C4 if anyone has any info on that I'd love you forever.