what are codes?

i heard many ppl saying need codes..
i wanted to know what are these ?

---------- Post added at 02:22 PM ---------- Previous post was at 02:21 PM ----------

i really see this hacking is so hard..i don't know what to do

---------- Post added at 02:22 PM ---------- Previous post was at 02:22 PM ----------

i really see this hacking is so hard..i don't know what to do

---------- Post added at 02:24 PM ---------- Previous post was at 02:22 PM ----------

srry i had lag and many replies went on :s

---------- Post added at 02:25 PM ---------- Previous post was at 02:24 PM ----------

if there is anyone who would like to help me .. add me on skype,msn or facebook
just write a reply if you will add me and i say my address