I used utility called Tile Molester. There are other tile viewers out there as well and even some emu allow you to dump the VRAM - which usually has the font tiles. Anyway - you need a font maker utility once you have the tile(font) set extracted, to create a font file to use with a paint program or word processor. The font I pulled was from Son Son II, but SF2 either of the console ports might be a better choice to get the font.