Bren88 I am an expert on neither program so I'm happy to stand corrected.
The firm also appear to offer a course on 3DS Maxhttp://www.paradigm.ie/
Of course if you're in the cheap you could download
Google's Sketchup - sketchup.google.com
Blender - http://www.blender.org
or DAZ - http://www.daz3d.com/studio/
Here is a more complete list of free 3D softwarehttp://www.software4free.org/3d.html
Gaining experience with the concepts and how to approach 3D rendering may be of use for your own office on a budget or for personal use.
However, employers are likely to want you to employ more mainstream packages and BIM - Bleedin Idiotquantitysurveyors Moveover - based software seems to be flavour of the month.