Flash IDE and Library Classes

Hi everyone!

I’m new to the Flash CS3 IDE/AS3. My question is: why can’t I make a class (for example the Ticket class) and place an instance of it on the Flash IDE and use Ticket class methods???

A more General question: Do people usually set a document class and use a main class for all the code or do they actually lay them out on the IDE and manipulate them there (via ‘action’ layer). I’m very confused, someone help! :red: