Copy data from Active Directory to file then to LDAP Directory DNN v1.5

I have LDAP DNN 4 v1.5 that have the posebility to display a lists of firstname, phone numbers, departments, title from my Active Directory straight into DotNetNuke. My problem is that the computer department want open the ldap port from DMZ to the company network as due to security. They told me that they could open ldap from Acitive Directory Server to an new server on the inside the company network then I could copy the information from this server to the DNN server. I need a script that can take out Name, Title, Department, PhoneNr from Ad to and file and push it into the database where dnn have its tables. so it could be listed in LDAP DNN 4 v1.5 ## Deliverables LDAP DNN 4 v1.5 module to DNN is attached