How hard is this to learn for someone who is used to using Autodesk Arch. Desktop 3.3 (Acad 2002). We used the Details program for our structural shapes (the one you installed seperately), which is now present via the Detail Component Manager (took a while to find,) but will be using straight Autocad at my new job with a non-ADT library for structural shapes. How good is it at what it's supposed to do for that matter? How does it work with Autocad and what should I keep in mind?