Yeah, I
WAS using 2006. Kinda made me wish for Microstation.
NOT! The new CUI menus are XML driven, so they were probably just post-beta when the release came out. My best guess is that Autodesk is bulding up to some kind of web based menu system. When I was using 2006, I tried making my own CUI, then I was relieved to find out that they still supported mnu's. So, I just stuck with that. Navigation was a bit cumbersome, but I managed to fuddle my way through it. But its all behind me now, and the best I can hope for is AutoCAD 2007.
From upFront.eZine:
Broad hints indicate that AutoCAD 2007 will sport a new rendering engine. With Microsoft adding PDFout to Office, maybe there'll even be a PDFout command added. AutoCAD 2008 might include a new programming interface and a new look to its user interface, thanks to Vista.