Resolution:
Here is the sequence of events to get LDAP running with InConcert 6.0 on Windows:
· Install Netscape LDAP version 4.16(4.x) (important to remember suffix - this is root of your directory tree)
http://www.iplanet.com/downloads/patches/5114.html

· Load the InConcert schema into LDAP

· Create a new organizational unit of your directory structure -

InConcert, for example,
· Create a new user(IcUser, for example) inside InConcert - organizational unit
· Create a new group(IcPool, for example) inside InConcert - organizational unit
· Provide necessary InConcert objects and attributes to an IcUser and IcPool
· Configure LDAP TAB, including ADVANCED of the InConcert Server Manager:
  -directory server host's port number
  -host name of the directory server
  -admin user password
  -pool search base, for example: 'ou=InConcert', 'o=ne.tibco.com'
  -user search base, for example 'o=ne.tibco.com'