on my computer running 98 it shows the manufacturer and make of the card in the registry under Hkey_Local_Machine\enum\pci\ven_1002&dev_5144&subsys_001A1002&REV_01\00080

under Mfg and DeviceDesc

but i don't know where it would show up if you had onboard video so just enumerating all the pci subkeys and working down till you found the device with the Class = "Display" might not work