I have been testing some of our VBA programs under Windows 7 with Autocad 2012. The first thing I found is that every one of them that ran using Randall's batch processing failed. Many of the VBA programs (not requiring batch processing) that strictly deal with changing properties of existing (common) entities, passed on the Win 7 computer with the VBA enabler installed. Although these will still need to be re-written in the future, they have moved down my priority list.
On the optimistic side of re-writing these programs is that many of the wish list items from my users can now be easily incorporated in the newer versions. As well as some of those "Oh man, I wish I had thought of that sooner".
Practice, practice, practice... Probably what I need the most of