Some constraints on the Zoomer keep some desktop apps from working on it, though small and simple apps should port no problem. For example, I've seen some of AGD's apps in beta and released format, and I've put them on Zoomer and they've worked just fine.
If you use the correct GEOS programming techniques, your applications should run on all GEOS devices (desktop, Zoomer, PT-9000, further ones as they're announced).
Pete.Subj: Access to Palm Apps