combobox help

[crystalmedia]

I want to make like an order form in flash
Example:
1. There is one combobox on stage, with several choices, depending on which one you choose another combobox appears to the right of it, divided by 10px. Then depending what you choose there it opens another combobox... It should be sort of a product sellection system, where you by following groups choose the desired product. So it should have more rows, and i want to make it so if i want to add another product, then i would want to have a button that when i click it it opens a new column under the last one with the same name, just allowing to choose another product... Am i somehow clear? :eek:
I tried to make it, but i run into constant problems :mad:

the only right part ive done is the beginning and that is not much :confused:
this.createClassObject(mx.controls.ComboBox, "my_cb", 10);
my_cb._x = 10;
my_cb._y = 10;
my_cb.addItem({data:1, label:"One"});
my_cb.addItem({data:2, label:"Two"});

I want to make it all in AS.
Please help, i've been loosing my head over this for days now!!!!
thank you!