The first issue is that SMB does not mount the full file system but only a subtree (/home/zaurus/Documents) and the Addressbook, Calendar etc. is not included. This can be solved by adding a symbolic link (ln -s / /home/zaurus/Documents/root).
The major issue is that the data files are not at all compatible. Sharp uses a database called "DTM" while the Mac uses vCalendars and vCards. So you need some sort of data conversion software anyway.