Syslinux - May 2008 - The new graphical simple menu system

I want to learn how to add list on the new graphical simple menu system. Can
you give me some documents to add list on the simple menu? I am a newer to
Linux. Just I installed Knoppix 5.3 linux on my computer. I do not know how
to work for syslinux. Please, give me your advice. Thank you in advance.