Get out of debt without ruining my credit?

Ok, one of the systems with say 3 cards, is take the lowest debt and kick s on it(double, triple or more), make the minimum on the other 2. When it is payed off, take that and add it to the next lowest debt, kick s on number 2, when done do the last. This system can be done this way or by choosing the highest interest to lowest interest card. Check out Dave Ramsey, on the radio, or read one or more of his books. He is a Multi Millionaire, and Real Estate Mogul, with a Fico score of 0