How to change the background of the forum! (2.0.10)

[Regzo]

How would I change the background to an image rather than like the background on this forum, which is the blue fading away..
I'm a complete noob to css php etc.. so could anyone if a file directory is required tell me where to go to change any files if needed please!

[Kindred]

well, the background of THIS site is an image...

1- get firefox+firebug
2- check the CSS that is being used for your theme
3- edit the CSS for your theme.

http://www.w3schools.com/cssref/css3_pr_background.asp

[Regzo]

Ok so I got it to work.. hxxp:elsons.phy.sx/forums/index.php [nonactive]

and basically now this has happened. I checked the code and it says repeat x, which maybe is the axis? I'm wondering how to repeat it downwards, y axis how would i edit the code

{
   background: #E9EEF2 url(../images/theme/backdrop.png) repeat-x;
   font: 78%/130% "Verdana", "Arial", "Helvetica", sans-serif;
   margin: 0 auto;
   padding: 15px 0;
}

EDIT: The background with the stripes was an example

[Shambles]

Try just using "repeat;" instead of "repeat-x;" (test it using firebug), though with that background the stripes may not match up.