Positionning articles

[LA CAVALERIE]

Hello I want to decide the way I positionne ther articles on a page. So I use the positionning tool in the list. It seems to be Ok because one the back office it is Ok but on my front office, it depends. Generally it doesn't work. I try with Mozilla and Internet explorer. I use 1.6 version but the problem was the same with 1.4. Could you help. Thanks;