I've been trying and I can't figure it out. :banghead:
You need to have the picture hosted on a server. Google for either Imageshack or Photobucket (the two biggest ones that come to mind). You upload a picture to them, and they'll give you a web address for where it resides. Put that address into the field in your Profile here that asks for it, and you're done.
I tried that, and nothing happened. :unsure:
alright. Got it working! thanks. :)