When you create a presentation from image files, you need to specify the project/presentation dimension.
All imported images will be scaled to fit this dimension. A image browser window will be opened. Move the cursor to the folder where the images are located and select the image files. You can make a multiple selection by clicking and holding a Ctrl button or by simply dragging the mouse to make a rectangular-multiple selection.
Click add photos to continue.
Note that Flash Demo Builder tries to retain the image quality as much as possible by automatically choose the best image compression that fits the image format. For example: a lossless compression is used to compress BMP and GIF image files and a lossy compression is used to compress JPEG image files. You can always change these settings anytime during the editing process.
Next - A quick introduction to the Flash Demo Builder user interface