Adding to what others have said, since you mentioned that you are using
Times New Roman, the OpenType version actually contains the 5/8 and 7/8
fractions. Use the Windows Character Map program (Start> Programs>
Accessories> System Tools> Character Map), select Times New Roman as the
font, and make sure the Character Set is set to Unicode. Then scroll down
through the characters until you find the 5/8 and 7/8 characters.
Double-click the character you want. It will appear in the "Characters to
copy" box. Click the copy button. Then switch back to FM and paste the
character.
Mike Wickham