Try this one. It worked for me.http://tinypic.com/?t=postupload
First, upload a picture. Before you do this make sure the file type says image. I haven't tried just putting the url, so you may want to right click and save the picture, unless you are just uploading from your computer.
On the right side of your screen your picture should be loaded. Hit view full size image. After this put your pointer over the picture and right click and open link. The picture should now have its own url.
Just go in your edit profile and use your url option instead of the upload option. Then hit submit. It should work.
One more thing. If your image is too big, then you can transfer the image to paint and resize it that way. Then just repeat the steps.