Sorry for the crosspost. I noticed this group was by far the most active.
My question in another discussion group was unanswered for over a week.

I have been trying to install proprietary drivers for my NVidia based card
(8600GT) However a resource conflict between drivers for VGASAVE and Intel's
PCI Express root hub has prevented successful installation of any updated
video drivers. VGASAVE is trying to use I/O Ranges 03B0-03BB & 03C0 -03DF
and Memory Range 000A0000-000BFFFF already claimed and used by PCI Express
Root Hub.
I have uninstalled all video drivers, ran driversweep, as
well as uninstalled all the drivers for Intel's chipset and reinstalled
updated drivers for them with the latest .INF files from Intel for the P965
Chipset. Upon successful installation I checked the properties for the PCI-E
Root Hub drivers and found the file containing drivers to be pci.sys from
Microsoft and not Intel. The persistent resource conflict under VGASAVE
remains. Perhaps Intel's drivers are not the problem.
Will I be forced to re-install vista and use the latest inf files from Intel
at setup (prior to installation) to overcome the conflict? I would like to
uncheck the greyed-out "Use Automatic Settings" under the resource tab for
VGASAVE and use other idle resources