Nope, no 3rd party themes or apps, just some downloaded icons and some registry tweaks to apply them. If it's just an image, its probably similar to changing the start menu background, right? I tried to do that following a guide (probably from here) but couldn't get it to apply, it just broke my aero.msstyles file, although I'm sure that was my error somewhere along the line.
But yes, default aero with personalized touches, nothing too wacky. Thanks for the help.