Component timeline snap intervals

Hey, I’m working in Flash CS4 and trying to get a timeline component to work. I want things to appear once it hits a certain snap interval, but disappear on all the others. So far i’ve gotten the disappearing to work, but I want it to reappear again when it’s back on the right interval. Attached is my file. Can anyone tell me what to do? If you are feeling better about actually doing it then explaining it, then you can re-save it and attach the working file. Thanks!