Kolleen

Karin,
Here's an other link to some of the testing methodology used:

http://www.oirf.com/vega/vega.html

http://spanda.com/books/functional.html

Just in case your curiosity gets you more than the availability of the
previous book.

The difference is this is much more technical, and I don't know about
you, but I don't have enough quiet around here to read anything that
isn't in laymans terms!

regards,
kolleen