Don't you have to create new run-time image with necessary drivers included?

>I have a Kiosk with XP Embedded that I need to add a new network card.
>The account that logs is the Administrator one.
>The problem is that the card is detected and there is no wizard to let me install the drivers.
>The card appears in device manager but if I click Update Driver nothing happens.
>I believe that there is a kind of policy enabled that doesn't allow me to add hardware/drivers.
>How can I solve this?
>Thanks in advance.