go on the cheat engine site vreeland , plenty of tutorials on there but its best to just dive straight in and go for it , if you fuck up just restart the game and try again
theres no anti cheat so just keep changing shizzler until you come up with whatever you want.
btw theres a tool in the download section i made which pauses a live game so you can inspect it without it changing ( freezes it ), also learn this its important , learn how to backtrace.
^ that jump is called from a function that evaluates whether or not its an enemy attacking you
theres a jne just before the function call ie .. enemy attacking or friend.
friend ... jne
enemy .. call block
auto block server ? .. jne
auto block on ... call blocking function
i wrote a mini tut on how to find the auto block code on this forum somewhere
read it and work on it you will find it difficult at first but when you get to know how it works you will realize just how easy it is to do.
regarding the wallhack tut , yes it will work on windows 7