lets see...the code you'd be looking for is this here...go to this page: http://www.livejournal.com/customize/options.bml?group=customcss

and then put in this code:

body {
background-image:url(http://i329.photobucket.com/albums/l369/pheonixxfoxx/ZorgBookRedo001-JPEG-smaller.jpg);
background-attachment:fixed;
background-repeat:no-repeat;
background-position:left bottom;
}

IT SHOULD WORK. :O