How to change characters in Day Z?

[Allstargun 2]

Ok, so this probably isn't what most of you think it is but I need help.

My friend came over, used my computer, logged onto his steam account and played DayZ on his character.

Now that he has his computer back, he is playing on that. But I cannot get back onto my character on my own computer.I signed into my steam account and even uninstalled Sixlauncher/Sixupdater but it still logs me onto his guy. The worst part is, he is playing on his guy so it keeps telling me "you were kicked off the game."

I would really love to know how to get back onto my player in Day Z. I am logged into my own steam account.

[Bunster 7]

There are a few posts on this with the same details really, try hitting the search button :D

http://dayzmod.com/forum/index.php?/topic/28649-two-characters-with-two-different-games/page__hl__%2Baccounts+%2Bsame+%2Bcharacter

[Reloading 0]

Launch arma2 from your steam account to overwrite your friends cd-key in registry.