I should have checked the ObjectARX SDK before posting... the Civil 3D samples are pretty much the same (at least for the versions I have installed), so I sometimes discount them to search online.
For the task I am attempting to complete, I believe a single object would do, as I only need it to act once for each document when it is added/opened. Also thanks for reminding me that a single object is possible, as my initial thought was to create one for each document, which would not be necessary.
Not really sure of the difference or advantage between a single Object, and/or a Static Class in this context.
As always, thanks for the guidance, Jeff & Tony. :beer: