Need an Introduction to Tiny Core? Or peruse Core Concepts.
start appbrowser from the control panel (cpanel), connect to the repository and download or install the ntfs-3g utility; if you want to have it at boot, just copy the code into /opt/bootlocal.sh; this code should be smthg like: tce-load -i /partition/tcedirectory/optional directory/ntfs-3g.tcz