>If I place a class on a form I can easily change the code for a method or event. If I instantiate a class using CREATEOBJECT() in code, how do I make the same code changes to a method or event?

When you place an instance of a class on a form, you are effectively creating a subclass of that object that allows you to override methods and properties. If you don't want to drop the object on the form at design time to override methods, you'll have to create a subclass of it somewhere else.