Hello Operaguy:

Thank you for your reply. 
It is understood that the audio will be  generated external to  Poser and subsequently imported in .wav format.  My concern, however, was the potential for loss of synch and I gather from your reply that some degree of realignment may be required.  I too have the latest version of Final Effects but since it requires a back and forth maneuver in regards to Final Cut, I will most likely use either Shake 4.1 or Boris Red 4.1, which resides within Final Cut as a plugin.

While we are on the topic of lipsynch, are you aware of any other software, for the Mac-Intel environment, that will provide for more accurate and realistic lipsynch of Poser produced characters either from within Poser 7 or external to Poser in other software, such as Maya 8.5 which I use, from time to time, as well.

Thanks again for your assistance.
Ron