No it wouldn't be a selling factor at all. You're planning to develop a CD to inform and educate people in programming languages, you need to make it as accesible and userable as possible. HTML would be ideal, users can copy and paste code and view it without loading flash animations and unwanted effects.
You don't need anything flashy to sell this product, well written learning materials will sell itself. If the flash serves a purpose (which I can't see it does) then don't bother with it, for the sake of it.
Good luck with the venture, keep me updated.