Aligned left in FF, centered in IE

I’m new to this, so please bear with me. I’ve gotten my page aligned to the left, which is what I want. However, in IE, it still aligns to the center. No clue why. The thing is, I can’t even remember what I did to change the alignment from center to left in FF! (Guess I should have written it down).

Anyway, here is what I have in my stylesheet:

#page {
padding: 0;
margin: 20px auto;
width: 760px;
border: 0px solid #959596;
}

Any help is greatly appreciated!