...by going into impulsedriven.net Community......My Account....... and accessing your account details from there....it allows you to upload 100x100 avatars, max 40kb...jpeg or png....but...when I went to change to my Christmas avatar....found it's broken for the time being....for me anyway....so I'm back to shrunken...
I can only get it to change via my old pc. I'm assuming it has to do with the version of Flash you have.