Jon,

  It sounds like you need CEFileDirectory (or similar class developed
by others independently).  This is because the path name convention on
WinCE is different from Windows.

http://squeak.cs.uiuc.edu/mail/squeak-annc/msg00332.html

  Let me know if you have trouble to download or unpack it.

  I should put the file somewhere on the web anyway.

-- Yoshiki