VGA & Xbox? need help

as usuall i cant seem to get my new doodad to work properly.
i recently purchased a component VGA Box to hook my xbox to one of the VGA monitors i have lying around. but i cant seem to get the thing to work. the monitors i have all seem to not display the resolution properly. I m just wondering if anyone here has tried something similar.
VGA BOX.
or has a suggestion for a better Vga adapter.