Burning CD Problems

[blazeboy84]

Hi, my problem is when i burn cds or dvds, i check the place where it says i can put more stuff on later, but I CAN NEVER DO IT once i burned the cd already. Even though it says i can burn it later on.

I am using Nero Express and a LG dvd writer. And also using Windows XP. Please reply if you know how to add stuff later to a cd or dvd... THank you!