IE Background Image Problem

i've been reading a bunch of posts about this, but i absolutely cannot get this to work on my site. I am trying to get IE to display a background image that's a PNG. I'm setting the background-image to the PNG and it looks glorious in all but IE. IE7 looks super too. I'm doing all of this in a css file as the site is huge and there's no way I'm going through each page and doing it the way most of the samples have it (in the actual html).

Here's what I have been trying to get working in IE.

.CommonSidebarContent
{
font-family: Helvetica, Tahoma, Arial;
font-size: 80%;
color: #ffffff;
padding: 8px;
padding-bottom: 5px;
border-style: solid;
border-width: 1px;
border-bottom-width: 0px;
border-color: #666666;
width: 174px;
overflow: hidden; filterrogidXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='../images/IntelCouncil/BlueBack.png');
}

Doing it like this displays nothing at all as a background image. Could someone please help. I'm rippin my hair out over here.

instead of src try:
background-image:url(path/file.png);

You mean within the filter tag replacing the src attribute, or outside as another css attribute. The latter doesn't work.