IMPORTANT: Make sure you input only “clean” addresses above. A clean address is an address created post-fork, which has only Ethereum coins or Ethereum Classic coins, but not both. The easiest way to get a clean address for both assets is to download the Mist wallet version 0.8.1, and install/run the application under two separate user accounts on your Mac or Windows machine. For one user, answer “Yes” to the startup question regarding the DAO fork. And for the other user, answer no. You will then have two different Mist wallets, one running on Ethereum, and one running on Ethereum Classic. Make new addresses in each to input into the fields above.
Never send ETH to an ETC address and vice versa, or the funds will become contaminated again, and you need to re-clean them.