WP 2010: Background image that fills screen width – HOW?

Hi all,

I have searched far and wide and have not found an answer that works for me, so I hope to find an answer here.

page: https://www.riverbendventuresglobal.megabyet.net/mainpage

(very much a work in progress in its early stages)

I would like to add a custom background image that fills the screen, at least its width.

In my case, that is a picture of a riverbed under water, taken vertically from above, basically rocks and ripples, so it is a picture that can be stretched to quite an extent without looking weird.

Uploading it with the 2010 custom background tool does not result in what I want – it does not provide the option to stretch the image to the full screen width.

I tried different picture sizes; sometimes the picture simply does not show despite being uploaded, sometimes it does not fill the page.

Is there a way to use a custom background piture so it fills the screen width? That shouldn’t be so hard, right?

Any help very much appreciated…

THANKS!

Matt