I have done about a years work on a dc setup,and was a complete newcomer to wiring,etc.despite my advanced years. I have sections,a yard with sidings,and a number of points, and the whole thing seems to work. Want to explore the possibilities of sound,etc.and am asking the old boring question about changing from DC to DCC. Is all my hard work to go to waste, and would the change -over be unduly complex to one whose electrical skills prior to this layout were limited to wiring a plug and putting in light bulbs.