Quote - Also whilst I am asking do you know if it is possible to save images created using Poser in Poser's own format in an external file and then recall them back into Poser for future upgrades?

Poser does not have an image format of its own. The options for saving a static image from Poser are:

BMP
FPX
JPG
PCT
PSD
PNG
TIF

I usually export as PNG, then convert to JPG for web publication.

If you want to save a Poser scene for future use, you need to save it as a pz3 (scene) file. The pz3 file is not a graphic format, it is a plain text file that gives Poser instructions on how to construct the scene. If you want to save a scene for future use, from the menu bar, use File > Save. If you want to save an image use File > Export > Image.