Just to make sure here...
On the Amiga you'll need to go to
SYS:Storage/DOSDrivers/
and double click PC0
This sets up CrossDOS and allows you to read PC formatted floppies on the Amiga. You can do this before or after putting the disk in.
You could also use:
mount SYS:Storage/DOSDrivers/PC0
(SYS is your workbench partition/drive)