How to upload an Avatar to your profile!

[Imp]

The image viewer & art program that microsoft supply are probably the very worst available. Many free art packages crop & scale which is what you need or download Ifranview its a free image viewer & can do it to.
Handy to have something that does this as many uses.
Replace the pictures in SP with ones you like for instance or make pictures the correct size for your desktop without them being stretched.