This tool by Kentaro.k-21 can import and export text data to / from Dungeon Master II graphics.dat files.

Tool-DM2TEXTe.Rev0.rar
- Dungeon Master II Text Data Importer/Exporter Revision 0
Tool-DM2TEXTe.Rev0.SRC.rar
- Dungeon Master II Text Data Importer/Exporter Revision 0 (Source code)