TFT Color LCD from Nuelectronics and TEXT?

is there a way (for me) to make or import a table for the letters?

void TFT_Font::putstr(char *str)

This function sends a string to the LCD, one character at a time. It appears that the put_Char() method does the look-up of the position of the character in the font array, so put_Char() just takes the letter to print as an input, not the position of the letter in the array, like I first thought.