control border, pb when printing

[PV]

hello,

i'm using infopath 2007 french version.
my problem appear when using "border and shading".
I want to suppress the borders of my controls.
so i right click the control and click border and shading.
It is ok when doing so concerning a text zone control.
But for other controls like "rolling list" or "to be modifyable list" (i'm
not shure for the translation), all the options in the border tab are
greyed. So impossible to click Preselect - none.

Thanks for any help.