How to mount ADF Files in workbench 3.9?

[Jope]

I found this to work best for my needs:

http://aminet.net/package/disk/misc/diskimage

When installing it, select the dosdriver that you need (DI2 is the Amiga DD one) and copy it as sys:storage/dosdrivers/DI0. Remember to change the unit to 0 in the tooltypes.