In [color:"yellow"]My Home[/color] click on the [color:"yellow"]Edit[/color] by the "[Linked Image] Personal information, email, password, etc."

Somewhere near botton will say:
[color:"yellow"]URL to your picture (80x80 max pixels, may be smaller) (.gif, .jpg, .png accepted)[/color]
Under that type the URL of the picture you want to put as your avatar.

And welcome on the forum. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />