Hi rock,
Do you have a link to your page where we could view all of the code? I'm guessing that you need a div around both columns. If you create a background image on that "wrapper" div that's the width of your left column and have it repeat down the side, you should get what you're looking for. For example, if you call that div "content", your css for that div would look something like this:
Code:
#content {
background: url(../images/background.jpg) top left repeat-y;
margin:0;
padding:0;
float:left;
}
That only adds it to the left side so to add it to both you could add another div like
Code:
#content_right {
background: url(../images/background.jpg) top right repeat-y;
margin:0;
padding:0;
float:right;
}
There's probably a cleaner way to do it, but that's worked for me in the past. Hope that helps.