How I can have an avatar?

[Devid_777]

Hi to everybody !
I ' m a " fresher " here .
I 'd like to have an avatar , ( like other "forumers" ) . But I don ' t know how to do this . ; - (
Could you , please help me . Does anybody know where to download i t ?
Or if I have a large picture , is it possible to make it smaller , and suitable for the foru m ?
By the way , what it the limit size , in pixels and k b ?

Thanks in advance . .