Fullscreen Background

I have a concept for my website:

http://img502.imageshack.us/img502/8798/iomesusv4td5.jpg

This will be my first ever flash website so I am expecting things to be tough. The first problem which I’ve encountered is how to get the background repeat pattern + gradient to fill the screen. I need the pattern the stay in resolution when the browser window is resized. The gradient needs to stretch/squash to fill the screen.

I was also wondering if someone could point me to a tutorial on how to make the central section of the website (as seen in the concept) float into position when the browser window is resized rather than moving abruptly.

I’ve search Kirupa and Google, I couldn’t find out how to do this. I saw the tutorial for repeating patterns (which by complete coinsidence uses the same pattern as in my concept! :trout:), I assume this will be useful? But it still doesn’t show me how to make it a background that fills th screen while staying in resolution, or how to do the gradient.

Thanks,

Peter