the whole 'uninstall your drivers' idea came from installing a new Graphics card. whenever you install a new graphics card, even of the same make, i advise to uninstall the old drivers and then install the new card then new drivers. for updating drivers you dont need to do this, which is definatly true for detonator as i use them, just install over the top.
i agree with the others, never ever let windows update try and update your drivers.