The mini palm computer is definitely a useful tool for the mental health professional. The hospital I worked at last summer provided palms for several of there staff members. Most were not using the systems for their full potential, but could easily be shown how to (the user friendliness of these systems are extreme and basic). I definitely encourage you to look into some of these practice aids.
If you want any more information on using the Palm in your work you can email me at mwfdecaire@home.com . Good luck!