I am not familiar with LDAP but what I could find quickly on the web is that it is a way to control who has access to what directories.
My guess is that there are LDAP dlls that LabVIEW can call with the call library node. There might even an activeX server LabVIEW can call. I recommend contacting the source for your LDAP and seeing how other compilers use LDAP and recreate the commands in LabVIEW. If you need to learn more about calling exteral code in LabVIEW look for the aptly named "Using External Code In LabVIEW" manual. You can find it by opening LabVIEW >> help >> serach the LabVIEW bookshelf.
