Just upgraded to Vista 64-bit was running XP 64-bit prior, anyway dragging and dropping of images is not working in Vista 64-bit, either when dragging them to the main ImgBurn window, or the ImgBurn Queue window.
Also another feature that would be nice, been wishing for this since back in the DVD Decrypter days, the ability to read an image off a disk in one drive and either burn it on the fly to a second drive, or read to hard drive from one drive first and then burn the image to a second drive, all automated.