what do you mean ?
normaly is ,you get the injector .
any injector ,you've got a lot of them to choose.
"naeron injector" "Leaf injector" "mpgh injector" ,and you just rename the injector with the name of the .dll
as if : youve got a .dll called "besthack.dll"
and you've downloaded the leaf's injector.
you'l rename the leaf injector to besthack.
run as admin (if vista or W7) and rock on with the hacks
hope i helped*