Here is the page on posting avatars (which is the picture under your name)
http://www.yorkietalk.com/forums/pro...?do=editavatar
Avatars can be a maximum of 75 by 75 pixels and up to 18kb in file size. Profile pictures can be 100 by 100 pixels and up to 30kb in file size.
For Donating Members, avatars can be 125 by 125 pixels and up to 50kb in file size.