In these cases, using multiple cameras can come in handy by giving you great control over your hither and yon values. Multiple cameras can also assist with making skyboxes and heads-up displays.
I've been researching this topic for a while, and I decided to pull it all together into an article about multiple cameras in Shockwave3D. The article has a fair amount of detail on the use of multiple cameras, and comes with some sample code to use in your own projects.
This will hopefully be the first in a series of articles wherein I am going to try to document more of what I find out about developing for Shockwave3D as I build personal and work-related Shockwave3D worlds.