you already posted this further down didnt you??!!!!!
you need a photobucket account (www.photobucket.com) then once you have uploaded your piccies onto there resize them so they arent too big then write [image]then type in the properties address'[/image] in the signature bit undre your user profile.
hope this helps im not very good at explaining computer stuff!
User options, then click edit next to personal options (well the top one anyway...)
Scroll down till you see the bit that says avatar - and there is an option to click to use your own avatar - click on browse and find it in your pictures.
You may need to resize it first through microsoft picture editor or similar to get is small enough...