you can use any discs that can be formated on 720kb ms-dos format
except if you have a high density floppy on your amiga, that way you can format the disc also at 1.44MB ms-dos.
edit:
go to disk utility on leopard and see if it has an opton to format the disc at 720KB...
otherwise you will need to format the disc from the amiga, but you will need a program from aminet that if I remember correctly its called multidos
and have pc0: mounted
