This is one of my favorite images from Comic Party featuring Yuu and Eimi. Vector comes from part of a scan of a magazine article or something. The background was modeled after a screen shot I found on google of an old Godzilla movie.

I've uploaded the widescreen 1920x1200 version because it is the least cropped from the original image but there are multiple sizes to be found here including a range of single and dual monitor sizes as well as the variant night time version.