Background Pic Issues

[jdkracker]

Hi All, I'm new to Web Designer and I am trying to get a split picture as the background into Web Designer 5 but am having lots of difficulties doing exactly what I want. I have attached a thumbnail of what I want.... I just can't get it right. First attempts resulted in the picture tiling. I downloaded the "tweaks" and put the placeholder in to prevent tiling. Now I loose the black background and the pic(s) is not positioned correctly. Any helpful advice is greatly appreciated! I have already split the picture but am lost from there. I am using Xara Xtreme 4 for the graphic work. Thanks so much!