Heres how I did mine:
Install Windows 98SE onto freshly formated C: partition, and only the graphics card, HDs and CD-ROM plugged in.
Install DirectX 7 or 8.
Install VIA 4-in-1 v1.26, just the AGP driver part, in Turbo mode.
Install graphics card drivers.
Install DirectX again.
Check DMA tick-box in Device Manager for compatible drives.
Insert network card, set that up.
Insert sound card into PCI Slot 3, get that set up.
I have no other cards so that was it for me!
Working like a charm, as I say all drivers are Windows default except for VIA AGP (and card specific drivers).