ummm, just click on the options screen ingame and go to key bindings????? >.>
EDIT: misread OP, i'll leave this here so people can point and laugh =P

I opened mine and this is what it said:

[GameEvents]
evtShowHealthBars=[i]
evtToggleMinionHealthBars=[u]
evtSelectAlly4=[F5]
evtShowScoreBoard=[<Unbound>]
evtDrawHud=[o]
evtCastAvatarSpell1=[d]
evtSmartCastSpell3=[s]
evtSmartCastSpell1=[a]
evtSmartCastSpell2=[z]
evtSmartCastSpell4=[<Unbound>]
evtPlayerAttackMove=[<Unbound>]
evtPlayerStopPosition=[<Unbound>]
evtChatHistory=[<Unbound>]
evtPlayerAttackOnlyClick=[<Unbound>]
evtCastSpell4=[r]
evtEmoteLaugh=[l]
evtEmoteJoke=[j]
evtEmoteTaunt=[k]
evtEmoteDance=[<Unbound>]


basically nothing else that you have mentioned, only the things i have changed in game. What has i done wrong :<

There is nothing wrong!

These are the changes you applied so far, now you can add additional commands.

The interesting thing about hohums list is that there are options that you cant access via the keybinding or other menus. For instance the already mentioned Normal-casting spells via a key combination (shift + x) or the additional Mousebuttons.

Edit: lol i got censored because I misspelled shift

I like this line:
evtUseItem7 = [b]

Because it leads me to believe that instead of implementing a seperate "Recall" feature, riot just threw up a hidden 7th item slot, filled it with a blue pill that doesn't run out, and bound it to "b".