How to Change the Flint for an S.T. Dupont Gatsby Lighter

These are instructions for how to change an S.T. Dupont Gatsby Lighter's flint. The Gatsby Lighter requires the black S.T. Dupont flints, which can be purchased here: http://www.lightersdirect.com/Flints+%252526+Wicks.2163/S.T.+Dupont+Black+Flints.13895.html