I'm absolutely positive it is an AFP protocol because my wife's MacBook connects flawlessly, just like at school (and because it says it's connecting to afp://blahblah/ad/nauseum/).
I've read a number of threads on the Ubuntu forums that went WAY over my head, and installed the packages you recommended, but I'll have to dig around (the usr/bin?) to find out where they are, and to run the ./config, etc. I guess it was too much to expect Mozilla or KDE to write an AFP add-on for Firefox or Konqueror.
It's not critical at this juncture (yet), but I genuinely appreciate you pointing me in what has all the earmarks of the right direction. If you ever find yourself in Indianapolis, the beer is on me.