LDAP searches and OU's

I am using LDAP to connect to AD to pull the user accounts. I am confused how to do the searches to find users. My structure is a bit confusing.

company.edu

campus1

computers

faculty users

staff users

students users

campus2

computers

faculty users

staff users

students users

I want to only read AD accounts from the campus1 faculty and staff users and then campus2 faculty and staff users. No computers and no students.

Have a look at http://community.igniterealtime.org/message/196870 .

Brian