If your CrapinTosh (sorry, it's not crap, that just sounds funny!) has an Intel chip, and the Banks PDA has custom "windows only" software to do any firmware/software upgrades to the Palm device. Then look into Vmware or Parallels virtual machine software. Install a copy of windows on your Mac in a virtual machine and you should be all set to do any necessary functions.
As far as standard Palm tools, like calendars and what not. you should be all set with standard mac software.