The burned BTC are converted to chancecoins.
You can check you balance using this link :
http://chancecoin.com/balances
This is updated manually so you have to wait a bit before seeing your balance.

Or you can use the official client. In order to work you need to use BitcoinQt with the whole blockchain synced.

A new client is being developed so we don't need to use BitcoinQt any more. You have to wait for the devs.