ActiveDwg
   Offers a number of VBA utilities demonstrating the automation of general tasks with AutoCAD.
   http://www.activedwg.com/

VB CAD
   VBA related services for AutoCAD, along with tips and tricks, and some free code examples.
   http://www.vbcad.com/

VBA example code for AutoCAD and IntelliCAD
   A collection of VBA example programs for AutoCAD with source code to download.
   http://www.contractcaddgroup.com/download/