I was playing on the server with my mate and there was only 4 people on including a admin and i was shooting around (like in most games) and i killed the admin and he banned me i wasn't even in the boxing area! Pleas UN ban me i love the server

MY steam id is
Skyrim518
and my profile name is
TheKeyboadCat

same as the guy below you, pointing you right direction http://www.gametracker.com/clan/beerheadspub/forum.php?thread=65297
and try to read it this time, otherwise can't help you

Game: TF2
Name: Skyrim518 (TheKeyBoardCat)
Steam id: STEAM_0:0:41202972
Steam Profile Page:http://steamcommunity.com/profiles/76561198042671672
Reason: Killed The admin and got banned

Is that right?

you were banned for a week by not following the rules, the ban expired so you should be good to go.
Just please make sure you follow the rules this time since as you see they are forced and next ban going to be perma, it is really not that hard its just few and very simple rules,and to be save don't go into box arena at all if you're not Heavy.
I know people like to go there and watch, but once you swing anything than fists there you get booted very easily