Even though Chroma doesn't give you full control over your sidebar you can still put a 300x250 ad above the profile module using Custom Sidebar and Custom CSS.
The idea is to add padding to top of the sidebar column and then absolutely position the ad above the other modules.
First, add the following to Custom Sidebar:
<div class="custom-ad-module">
insert your ad code goes here
</div>
Then add this to Custom CSS:
#beta-inner {
padding-top: 270px;
}
.custom-ad-module {
width: 300px;
height: 250px;
position: absolute;
top: 0;
left: 0;
}
That's it! This trick will work for anything that has a fixed height. Simply add 20px to the the height of the element that you want to insert in that position so the modules have some space in between them.
