Visual Novel App?

This is why MPGH loves you. Assuming I should mess around with actionscript a bit then? I have some cracked version of CS5, that's what I need right?

Yep yep, last time I worked with flash was like 8 years ago :P

I'd do it in html 5, they say that flash is dying and html5 will soon be the 'real' standard (now it's just supported by all major browsers)

Is HTML5 that useful? Can you give me some examples of what can be done with it? I know some HTML, but it didn't seem very... advanced?

I personally believe that HTML5 will be helpful since it's about to be the new web standard.

Anyway before you start coding the app, I think it's important to understand the structure of Visual Novel(VN) and how it works.

Here's a quick start for you, The Ren'Py Visual Novel Engine
The structure/syntax they used are simply and mostly in layman terms.
Even so, the structure is really complicated when you want to make from scratch.

For example,
Character Dialogues inside Dialogues box(Dialogue box contains Save/Load/Skip/Previous/Next Button)
Playing BGM/SFX/Voice at certain point.
Changing Scenes/Characters images
Saving & Loading.

You can approach the forums in renpy regarding any methods on vn, they're nice and friendly (: