The 4 in 1 drivers is a set of drivers for motherboards with via chipsets. You can check if you have one of these from device manager.
They include updates for the AGP controller, IDE controller, IRQ routing and INF
They can help proformance slightly. In general it is usually best to have the latest drivers for any hardware.
They are available from: http://www.viatech.com/jsp/en/dr/driver.jsp
Oh and in my experience they can really screw up a Win 2K machine so don't install them if this is your OS.
They include updates for the AGP controller, IDE controller, IRQ routing and INF
They can help proformance slightly. In general it is usually best to have the latest drivers for any hardware.
They are available from: http://www.viatech.com/jsp/en/dr/driver.jsp
Oh and in my experience they can really screw up a Win 2K machine so don't install them if this is your OS.