Need to get rid of some menu items – how?

I’m working on modifying my Emerald Stretch theme to meet my needs. No blog, just download sales. I’ve gotten the top navigation menu pretty much the way I want it but can’t figure out how to get rid of 3 menu items that showed up on their own – Checkout, Transaction Results and Your Account. I’ve looked in the header and main index template code but can’t find how to get rid of only those 3, or where they can be found in the code. Can someone help???