How do i add a forum icon

[heeroyun]

http://img219.imageshack.us/img219/8015/iconpe8.png
Vbulletin and many sites have an unique icon like this . I want to make one for my forum as well but don't know how to do it . Anyone can exlain how ?

Thanks in advantage

[snakes1100]

create a image and name it fav.ico and upload it to your public_html dir.

[heeroyun]

Uploaded

But nothing happend .-.

[snakes1100]

Dont worry it will.