I'm helping someone upgrade from using a PCI graphics card to a 4X AGP card on their XP Home SP1 machine. The machine has a Tyan Trinity 400 S1854 mainboard with a VIA Apollo Pro 133 chipset. Do I need to install the VIA 4-in-1 drivers before I put in the new AGP card, or does XP already have full built-in support for this chipset? What about just the VIA AGP v4.30a drivers? Thanks for any advice you can give me.