I am having an issue related to executing a .Net dll from a classic asp application on a 64 Bit Windows Server 2008 server running IIS7. The situation is as follows:
Try this
Component Services -> Computers -> My Computer -> COM+ Applications
Open a COM+ Application object.
Open Components.
Right-click on a class and select Properties.
Under "Advanced" there is a check box for "Allow IIS intrinsic properties".
It works for me