OK SOLVED
As I received no feed back, I decided to try to change by myself.
So I looked in the source file, modified a little bit, and compiled. Thanks to the programmer for his clear source, and comments. Despite I never touch "Machine Assembler" language of my life, I was able to fix it for me.
Now my version, DON'T hide anymore when I don't select the option.
2009-06-14 04:43:21 UTC in GAG, the Graphical Boot Manager