I have just started reading about the DCC systems and have been wondering...since I bought several Kato diesels with "a DCC-Friendly mechanism for easy drop-in of a DCC decoder" (according to Kato) can I buy a DCC system and convert my layout from basic dc to DCC? Would I be able to use my Bachmann Spectrum non-dcc diesels along with the Kato "DCC-Friendly" diesels? Does DCC require a special power pack? I have an MRC Tech 4 powerpack rated at 20 volt/amps output that I just bought and like, but would that be compatible with DCC requirements? Finally, any good websites that explain DCC and it's basics that you know of would be helpful. Thanks very much.