I seriously doubt this issue is still ongoing, but in any case id just like to say that i uploaded by clicking the box that has a picture with a diskette, browsed the pictures on my computer, selected one, pressed "Host it" wait like a min then it gives like three Urls, copy the one that says image and just put that in the signature and Voila.
By the way, im totally conquering all the topics since no one else is online so expect to see a lot of me when you come back. :3