I have a similar problem with my Dell DE051 (Dimension 1100), but when I run the video update files I get:

"INF File has no information for this system hardware. Process will ABORT"

and it does. I am certain the  graphic processor is: INTEL(R) 82865G Graphics controller (266 MHz, Integrated Graphics. Mother board analysis confirms this with "Intel 865-G PCI accelerated, video adapter enabled.". All help resolving this to get the graphics back to original is most appreciated.

Mike