Looking for a floating menu that displays pictures

[HM666]

Its hard to say what the code would be without seeing the code of the mod. But this is definitely something you would have to change within the template code or other code provided by the mod to make it where you can personally edit what threads the images go to. It actually might be easier to install something all together different instead. Perhaps a JavaScript would work. You can try Dynamic Drive for free to use JavaScripts. There might be one there you can install and append to vBulletin.