on Handspring Visor - FitalyStamp, Palm III model
There is a version of FitalyStamp available for your Visor. Check the chapter "Palm OS3 and OS4 Installations" in Overview of Fitaly Version 3 -- final release
. The correct Stamp for all Visor models is the one called "Palm III model"
FitalyVirtual won't work. If you prefer Fitaly (the on-screen version, working only on monochrome devices) you're stuck with Fitaly 2 - or have to wait for the mythological Fitaly 4 ;-)