What are you using to build your Flash application? If you're having a hard time getting used to the timeline paradigm, I'd suggest taking a look at Flex and Flex Builder. You can download Flex Builder for free from the Adobe Labs website at http://labs.adobe.com (It will be available for less than $1000 US after the beta is over, and the SDK which allows you to compile Flex applications will be free).
Flex is the new way for creating applications, and gives you an Eclipse based environment for creating Flash applications. I've written up two tutorials on how to connect PHP and Flash. You can read them from my blog at http://blogs.adobe.com/mikepotter/
Mike
Mike Potter
Adobe Open Source Evangelist