Hi Rex, as you've surmised the only way is to add another line of text consisting of a single underline character and overlay that on the text, adjusting the length as appropriate.
The lack of an underline button seems a strange omission in a text editor but that's Cyberlink for you
Regards,
Mike
Home-build system:
Intel Core i5 Quad Core 3.3GHz, 2 x 4GB DDR3 1333MHz,
Asus Nvidia GT440 1GB, 2 x Western Digital WD10EARS 1TB, 1 x Seagate ST1000DM010 1TB,
Windows 7 Prof 64-bit, PD 9 Ultra 64, PD 13 Ultimate 64