Yep. Lots of third party stuff avaliable. I recently upgraded a Powerbook 1400c ram, Hard drive, Processor ect. It was fun to see that old laptop take off like a rocket. ( compared to what it was)
http://www.micromac.com/
http://tinyurl.com/djud3
http://tinyurl.com/9tob5

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….