Setup Project - Custom Dialog

I need to create a custom dialog and add it to my installation package. I have been fooling with Orca trying to create one with no luck.

Can anyone tell me how to create a custom dialog with 2 radio buttons with 2 text boxes below the second radio button? I want the text boxes to be enabled when the second radio button is selected.

I want to be able to pass the properties from the text and radio buttons to a custom action...which works for the canned microsoft dialogs...please help.

hoagers