Motherboard
http://www.driverstock.com/ASUS-A8N-...198/index.html
Radeon x1600 , not sure about this becuase if its wrong you will notice that you cant move your folders without "lag"
http://www.nodevice.com/driver/company/ATI/page3.html
install motherboard first, always, if it dont work, im not sure what will happen, but this is the driver for your motherboard and hopefully the graphics card. someone can vertify this?

