I'm sorry... they don't carry styli for the h1900, h2000, nor the h4000 series... nor any Palm besides the Tapwave 8O.
Perhaps it is not that unfortunate for them to be going out of business?

ops:
The should have offered alternative styli for all other PDAs. I would rather go to PDAPanache or Stylus Central just for their selection alone. If there is a stylus available it should be there.