How can I query the 'ou' of 'Groups'

[NOT.FOUND]

Hi,

In the LDAP server, I have a dricteory called myHome.com. Under this
directory I have Groups, People, and Special Users.
I've defined some 'ou' under Groups such as: Group_A, Group_B,
Group_C,..etc...etc...
Now, my question is how do I modify the search.c program to query the 'ou'
that I've created under Groups, or does it possible?

Thanks in advance  for any tip or example.
Steven