Your motherboard will come with Via 4 in 1 drivers on cd,you Don`t need to install them all ,I do since it does not matter ,but you will need to install these below.
This is from Via,
Q: What is the procedure for installing Win98 on VIA chipset based systems?
A: There are four important steps to follow:
1) Go into BIOS setup and enable USB
2) Install Win98 on your system
3) Download and install the VIA IrQ routing miniport driver from our driver page
4) Download and install the VIA AGP driver from our driver page.