CDO help

Hi , this is really easy for someone knows about Exchange and CDO and Com objects I have a code that connect to Exchange using CDO. it works fine on , but when i tried to use it in new server with Exchange 2007 64bit it's not working the problem summary is C#,C++ code can't see the Person,Appointment objects. when i tried to make sample VBS , it can access those objects I need to know what's missing , or what should I do I have all source codes Thanks Emad