Go to your private messages link in the upper right hand corner
On the left hand side, under "Settings & Options" -
The 5th one down is Edit Avatar
Now, you can upload almost anything ( no nudity or shear nudity or profanity ) from google images, but the image should be no more than 120 x 120.
if you choose one that is larger than 120 x 120 and can't upload it, save it to your hard drive and go here
Upload the picture from your hard drive and then select resize. Uncheck the auto sizing option, change the drop down menu's to "pixels" and enter 120 and 120, then hit enter.
The new image will be the correct size. Save it to your hard drive again.
"Browse" your hard drive from the avatar screen, upload to the forum, click "save" and you have your very own avatar below your name....
PSSSST - Hey, New Guy, Get a F**KING AV!!