well it seems you have found what your graphics chipset is:
intel 82810
you said you updated the drivers using windows update and it found drivers dated august 2000 ?
on intel's support site for
810 series, there are much newer drivers ! (august 2002, ver6.7)
you'll find them on
this page
from what I understood from Intel's
compatibility chart and the number you provided (5.12.01.2641), the version you currently have is not fully compatible with DirectX8 (only dX7)
maybe that's the thing (dunno if dX 8 is included with SP3 ?). upgrading the driver from the link above will hopefully solve your case