Hi Warren,
[quote user="Warren Malveau"]I am looking for a property that will tell me an attachment's orientation[/quote]
I think this property is not available in VBA API.
I guess the solution can be to use VBA wrappers to use MDL functions that provide far more complex access to MicroStation internals, but right now I don't know about any example code (to work with references is quite complex in MDL).
With regards,
Jan