In the Disc Imaging section is a tool called ADFimager to create ADF files on real Acorns.
If you want to create ADF files on emulators you can copy the zipped download to a harddisc partition of the emulator and then import the files with something like !SparkPlug. Or you use a convert tool for the filetypes like !TypeFind.
After that you can copy the converted files inside the emulator to a discimage and voila. That's all you need to do. Mostly....
