Hi Gina,
I don't think we can add <font> tag to this formula ( Abhilash.. correct me if I am worng)
use below and apply HTML Interpretation.
IF {ID_TYPE} LIKE "??-63-????" OR {ID_TYPE} LIKE "??-64-????"
THEN "6." + SPACE (10) +'<b>'& "YOU DO NOT HAVE AUTHORIZATION TO PERFORM THAT OPERATION."&'</b>'
This should work.
Thanks,
Sastry