DVDA won't skew the thumbnails it creates, but I believe you could do this manually, i.e. take whatever video images you want to use into photoshop or something, and skew them there, then import the graphics into DVDA and use that as the graphics part of the button. You may need to also make new face and mask images for the theme to do this, then set the menu button to "text only" and position the text under your image.