Background image on sidebar

In style.css find

.sidebar {
background:url("images/bg.jpg") repeat scroll 0 0 #E6ECE9;
}

Change the path for the image to what you want to change it to.

Also you have duplicate entries on your CSS like you are editing the .php files and adding CSS instead of editing style.css

Tank you dear wpbum
But still not right. CSS file is very strange.

I think this is problem related to:

#wrapper{
  float:left;
  width:100%;
  border-left:240px solid #e6ece9; /* Sidebar left background color */
  border-right:240px solid #e6ece9; /* Siderab right background color */
  margin-left:-240px;
  margin-right:-240px;
  background:#e6ece9 url('images/bg.jpg') repeat;
  display:inline;
}

Remove

.sidebar {
background:url("images/bg.jpg") repeat scroll 0 0 #E6ECE9;
}

and add what you want to

#sidebar_right {
}

and

#sidebar_left {
}

Tank you

But not right. I think the settings except sidebar is connected.