I never have downloaded AM but I was wondering if I use a test map and I place trees or somthing somewhere but I know where they will appear in my town map and I generate the code, will my town turn into the test map town? Or will it just be a code to place those trees? I think I'll just buy a Duo from Play Asia cause it's a lot safer, but I'm worried it's going to be like my ARDS and the stupid software won't read my DS. Are Duo's tend not to be read by computers? Or are they actully good?