I know this has been discussed before, but some of us have had problems uploading pictures for use as avatars. Despite some of the suggestions that were offered, they didn't work and perhaps many of us gave up. I finally discovered one trick that did work. I downloaded http://www.irfanview.com/
which stores any images that you may have saved in other files such as Paint. So, instead of using Paint, I use irfanview. Once it's downloaded, just click on file, then open, then click on the image you want uploaded, then click "open" again. It will appear on the irfan screen for resizing. To resize, being that avatar photos need to be under 100 pixels, click on "image", then click "resize/resample" and then make the necessary adjustments. Then click on file, then "save as", then give it a name. Step one is finished.
Next, on DBR, click User CP, click "edit avatar", click "browse", click "my pictures", then click the image you just resized, then click "save changes." Voila, a custom avatar.