Windows 2000 creates entries in the registry for each combination of USB port and SPC/USB device. This can result in many registry entries and port numbers. This should normally not effect proper operations but still you never know.
The only way to remove these hidden entries is by using the device manager. These entries are normally not shown by the device manager, see the article below for how to show hidden devices.
Once the hidden devices are shown, deleting is simple, just right click on the device and choose: Uninstall. Repeat this step for all the devices.
Other source of potential problems is the presence of old drivers and cached versions of the .INF file. Windows 2000 stores this information in the \winnt\inf directory. The simplest way to find all these instances is to simply use the windows find function and search for any file in the \winnt\inf directory containing the text: spcusb
It is save to delete the files that are found that way.
Using the Device Manager
To start the Device Manager, right-click on the My Computer icon, select Manage from the menu, and select Device Manager from the System Tools listed in the resulting display. The Device Manager displays information about each device, including the device type, device status, manufacturer, device-specific properties, and information about the driver for the device. See the online help in the Device Manager for more information.
If your device is a boot device, a problem with your device installation can prevent the machine from booting. In such cases, you will need to use the kernel debugger to troubleshoot your device installation. For more information, see the online documentation supplied with the Microsoft debuggers.
If your device is not required to boot the machine, you will typically notice a problem with your device installation because your device is not working properly and the Device Manager marks your device with a yellow exclamation point. The Device Manager also provides an error message. See Device Manager Error Messages.
When you are testing the installation of a new PnP device, it can be useful to have Device Manager list hidden devices. For more information, see Viewing Hidden Devices.
For Windows XP and later, the Device Manager provides a Details tab containing information that can be useful when debugging drivers. For more information, see Device Manager Details Tab.
Viewing Hidden Devices
The Device Manager lists the devices that are installed on the machine. By default, certain devices are not shown in the list. These "hidden" devices include devices that have the devnode status bit DN_NO_SHOW_IN_DM set and devices that are part of a setup class that is marked as a NoDisplayClass in the registry (for example, printers and non-PnP drivers).
To include hidden devices in the Device Manager display, click View and select Show Hidden Devices.
Another category of devices, not shown in the Device Manager by default, includes devices that have been physically removed from the machine but whose registry entries have not been deleted. These devices can be considered "nonpresent" devices. Users should never need to view such devices because a nonpresent device should not need their attention and should not cause any problems. If a user needs to view your device when it is not present, there is likely a problem with your driver design.
During testing, however, you might need to view such devices. To view nonpresent devices, open a Command Prompt window and type the following command:
set DEVMGR_SHOW_NONPRESENT_DEVICES=1
(You can also set this value in a permanent environment value using the Advanced tab of the system property sheet.) After you set this value, run the Device Manager and select Show Hidden Devices