Yes, there are a few Palm screenshot programs out there. Ask Barbara for a few names, or even do a search in this forum, as it was asked numerous times in the past.

I have a Palm paint program that has a screenshot function, but it's "timed", meaning it gives you something like 10-40 seconds once you start it, to get back to your source program... which is ok for static objects in another program, but never worked well for the animated fishies (or Villagers in Village Sim). They wouldn't hold a pose for me.