Unknown Device PCI Standard ISA Bridge? Need Driver?

Comp. is a Presario SR2011WM RC410-M motherboard ATI chipset Did a fresh install of XP everything works. USB front and back, Ethernet, Video, Sound, but I go into device manager and have yellow question mark as Unknown Device PCI Standard ISA Bridge, no driver installed. Updated chipset, updated video, updated sound, still get the "Unknown [...] http://bit.ly/q9aFcb