Click upload, add an image, add the Link URL, and click Upload Advertisement.
Description
DIMENSIONS: 125 pixels wide by 125 pixels tall.
Add up to two images to your sidebar, and select destination pages for each. This works great for advertisements, but it is also useful to drive traffic to other parts of your own website.
NOTE If your image is not sized correctly before you upload, visual distortion will occur.
Settings
Upload
Click the Upload area then drag and drop your image onto the target as instructed.
Link URL
This is the destination for visitors who click the advertisement image. It can by an on-site or off-site link.