Plant ID CD's wanted

[Jane Thomas]

Does anyone know of any CDs or programs for teaching plant
identification and the concept of dichotomous keys to beginners?  Web
sites with graphics don't come across very well on home computers, so
a CD would be ideal.  Ideally, a high school age student could use
such a program to learn about keys and also learn some trees and
other plants... in our case, plants of the Pacific Northwest
(specifically eastern Oregon).  Something user-friendly and
commercially available would be great.

                        Jane Thomas