One Image behind header and center column and more

Hello,

I'm not sure if I should put all this in one post, but here goes::

1. I would like one image behind header and center column - then another background image for the whole site. Like this site www.reolamusic.com. I'm not sure if this is possible

2. My workaround for this has been to put the same image in header and in center column. It doesn't look so good, plus I get the background image bar below header (where page menu used to be, before I moved it up onto the header image)

3. When I add "margin-top: 20px;" to Blog Title Styling it puts a margin above the header image. I'd like the header image to stay put and just move the blog title down a little.

4. How to put the tagline directly following blog title on the same line.

Thank you for any help - I love this site!

I'm using Atahualpa 3.6.4, Wordpress 3.2.1
Site: www.markfrasermusic.com