In VisualFlow you can create multiple screens, as many as you like, but at the end it is considered one Flow, and when you create a website from the Flow, its only one website.
How can you create multiple screens for one VisualForce page?
I guess if i want to be more specific, the following opportunity wizard example:
Has three pages, If i want to make this a public website, Then i would need to host three pages instead of one,
So is it possible to host one website that refers to all three pages?