While trying to fix a problem caused by a faulty NIC (one of those cheap Realtek 8239 family OEMs) I had to install it in different PCI slots, so WinXP recognised it each time as a different card. Problem is I didn't uninstall the driver every time I changed slots so now I have a good card recognised as NIC # 3 and I cannot remove all of the drivers for the previous ones from XP. When I display hidden devices in device manager and try to remove them it doesn't let me remove some sort of packet filter driver for the old cards - it says it is required to boot the system (funny since the hardware doesn't exist in the computer...). Safe mode didn't help either. Can anyone tell me how to remove the old drivers? Or at worst remove everything so I can clean install the good card.