James,

I think there is a beta for the Mac PowerPC ADSM client.
For info send e-mail to: adsmbeta AT vnet.ibm DOT com
We have found the Open Transport components to be rather "bleeding
edge" in general. This is especially true for the PCI based Mac PPC
computers.

Jeff Mathers
Computer Data Systems Manager
The Protein/DNA Technology Center
The Rockefeller University