Re: How do I change the main background image? Boreal
The background image can be positioned. See http://www.w3schools.com/css/css_background.asp for more information and an online editor to try things out. It's hard to say specifically because a lot depends on the dimensions of the image, what content appears on top of it and what its dimensions are, and so on.
This is a Tiki site that I did the theme for, based on the site's existing concept (a book) and graphics. But it's kind of a complicated thing to do, especially if you want to handle all of Tiki's display options, have it flexibly expand to accomodate large images, etc.
-- Gary