Changing the background in a Blogger template

I know html fairly well, but don't know JavaScript. When I went into the template code to edit the background image there the page would not render properly - the new background would not work.

Can someone please do a view source of my blog and give me the code for changing the background image? My blog URL is:
http://www.dish-network-satellite-tv.ws/blog/blog.html

 

http://www.blogblog.com/dots_dark/bg_minidots.gif <-- this is your background image.

You can change it in the first part of your CSS. Within the Body Tag.

<style type="text/css">
/*
-----------------------------------------------
Blogger Template Style
Name:     Dots Dark
Designer: Douglas Bowman
URL:      www.stopdesign.com
Date:     27 Feb 2004
----------------------------------------------- */


body {
  background:#123 url("http://www.blogblog.com/dots_dark/bg_minidots.gif") 50% 0;
  margin:0;
  padding:0 10px;
  text-align:center;
  font:x-small Verdana,Arial,Sans-serif;
  color:#abc;
  font-size/* */:/**/small;
  font-size: /**/small;
  }

Code (markup):

 

Thanks for the help! BTW, just wanted to say that it says it is OK to customize these Blogger templates all you want...

Also, that IS what I changed before and it wouldn't work. The part where it says #123 never saw that before.....