Need to create o=default organization/o=root organization

Hi there - am following instructions to get Commerce 5.6 working with Domino 6.5.1 LDAP. The instructions say to create the following orgs:

o=root organization

o=default organization/o=root organization

How do I do this? I can create ou=default organization/o=root organization fine but this is what is needed for Domino 5 apparently, and not 6.

Any help appreciated!

Thanks,

Jon