Hi,
I have created a guide for transferring ADF images from a PC back to a real Amiga, with the assumption that the reader is using a basic A1200 with external floppy drive but no hard drive.
The guide can be found here.
I hope it's of use to someone... Again, I underestimated how many screenshots would be required!
Note: as with my previous guide, this may not be its final resting place on the web, I'll either modify the URL above or post another note if the location needs to change. - Ali