Vista Systems doesn't post the software publicly, but you should be able to get it from your rep or from the staging company you're working with.
Vista has recently posted some training videos in the Support section of their site which you might find useful.
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events
You or a customer may not like the results after using Spyder software. Visual results depend upon the mode selected as well as break in periods for Plasmas, room lighting, etc for projectors, and so on. You may be better off using ane of the many DVDs available and your eyes.