Do I need my dev certificate right away or can I start to create the project in Flash first and add it later?
you don't need a certificate to test in flash but you will need a certificate to load your app into an iDevice.
there was/is a free cert available on the internet that can be used with a jail-broken iDevice.
Just what I needed to know.
p.s. please mark helpful/correct responses, if there are any.