Page margins

hey all,

ive been trying to set my page margins to 0 all around. did so in the page property inspector in dreaweaver mx, set top, left, width and height to zero. that got all but the bottom margin to 0. so i tried attaching a css. same thing. when i preview it looks fine, but then in ie6 the bottom margin sets back to default settings.
is ie overriding the bottom margin? is there some way around this? ive certainly seen sites with no bottom margin so it must be possible…