you know, I'm no expert at all!
but I can tell you how I did with mine:
I chose my pic, exported it into a graphic program and adjusted the size. I did with "paint"
for the simple reason that you can preset easily a certain size you want: 100x100 pixels, in this case. (a white field showed the chosen size, then I pasted in my pic and fit it into the white field-size)
saved it as .jpeg file on my hard disc ( .gif is also possible I think, but these have more kb I think
), then loaded it up on UM
yeah and try to create an avatar by yourself, it's fun!
shouldn't be a problem when you have a scanner; you could create your very own special unique avatar
what graphic programms do you have?
damn, I should really get me a scanner too, finally!
btw, it also works with WordArt
looked nice but I eventually decided to take a pic and "refined" it
)