Quickly! How do I repurchase OA?

Hey Got globally banned, and now I am repurchasing Arma 2: Operation Arrowhead.
What do I need to do exactly? Opened a new Steam account, do I now just buy Operation Arrowhead, and that's it?

Making a Steam Account won't rid of your banned key. Repurchase on the new account and replace the new key with the old one. At least that's what I did. If you ever launch DayZ through Steam with your old account, it will change your key back to the banned one. Not a big deal...Just annoying to have to change it again...I suggest not even using Steam to launch the game period. Commander or Six are so much better.

Key Changer: http://www.mpgh.net/forum/624-dayz-h...darky-hax.html