for big images use Highslide - the hs button.
[hs width=300 height=300]http://fc06.deviantart.net/fs27/f/2008/173/3/1/Blizzard_Competion_Subtmition_by_Kharnage.jpg[/hs] (http://fc06.deviantart.net/fs27/f/2008/173/3/1/Blizzard_Competion_Subtmition_by_Kharnage.jpg)