ADO LDAP Query to Child Domain Failing

Hello,
I have found a vbscript which queries the for exchange servers and gathers mailbox size and size limits for each exchange server.
I want to restrict it to a child domain but cannot get it to work. Script is below.
Our parent domain is corp.wow.com. Child domain is ap.corp.wow.com
If I set LDAP to "<[link=ldap://DC=ap,DC=corp,DC=wow,DC=com]LDAP://DC=ap,DC=corp,DC=wow,DC=com[/link]" the script errors with: Active Directory: An invalid directory pathname was passed
If I set LDAP to "<[link=ldap://ap.corp.wow.com]LDAP://ap.corp.wow.com[/link]" script errors with: provider: Table does not exist.
Any ideas what I might be doing wrong here?
Thanks!