Not sure if I understand correctly. But first of all if you're using Mist 0.7.2, you're working on the pre-fork chain. However if you have genesis coins and haven't moved them, you most definitely have both ETH and ETC. You can check on etherscan.io for your ETH balance on the forked chain. These should be identical if you haven't moved the ETH around.

You may want to consider moving those coins to a new wallet like Mist sooner rather than later, as the key format has changed since the early days. The keys are safe but in the future you might have an issue finding tools to make importing easy. If you'd like to discuss further, hit me up on twitter Hive account@paulszczesny0