Glad I have my KICKICO_OLD tokens which are worthless.
What does this mean?
I bought KC on September 15.
They are in MyEtherWallet.
Do I have to trade them in or something?

Means you invested in the ICO before the smartcontract got hacked and they had to restart. They claim they'll distribute the new tokens to everyone who invested up until around 70% I believe it was when it happened. Just have to hope they follow through or we've been shafted.
Can you give me or link me to some more info on this?
I'd like to know if this happens automatically, what timeframe, how to tell the difference between old and new.. stuff like that. Thanks!