Hi Try this below link
http://support.microsoft.com/default.aspx?scid=kb;en-us;823732
HOW TO: Disable the Use of USB Storage Devices in Windows XP
View products that this article applies to.
IMPORTANT: This article contains information about modifying the registry.
Before you modify the registry, make sure to back it up and make sure that
you understand how to restore the registry if a problem occurs. For
information about how to back up, restore, and edit the registry, click the
following article number to view the article in the Microsoft Knowledge
Base:
256986 Description of the Microsoft Windows Registry
IN THIS TASK
SUMMARY
To Disable the Use of USB Storage Devices in Windows XP
If a USB Storage Device Is Not Already Installed on the Computer
If a USB Storage Device Is Already Installed on the Computer
SUMMARY
This article discusses two methods that you can use to prevent users from
connecting to a USB storage device on a Windows XP-based computer.
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To Disable the Use of USB Storage Devices in Windows XP
To disable the use of USB storage devices in Windows XP, use one of the
following procedures, as appropriate to your situation:
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If a USB Storage Device Is Not Already Installed on the Computer
If a USB storage device is not already installed on the computer, assign
the user or the group Deny permissions to the following files:
%SystemRoot%\Inf\Usbstor.pnf
%SystemRoot%\Inf\Usbstor.inf
When you do so, users cannot install a USB storage device on the computer.
To assign a user or group Deny permissions to the Usbstor.pnf and
Usbstor.inf files, follow these steps:
Start Windows Explorer, and then locate the %SystemRoot%\Inf folder.
Right-click the Usbstor.pnf file, and then click Properties.
Click the Security tab.
In the Group or user names list, click the user or group that you want to
set Deny permissions for.
In the Permissions for UserName or GroupName list, click to select the Deny
check box next to Full Control, and then click OK.
Right-click the Usbstor.inf file, and then click Properties.
Click the Security tab.
In the Group or user names list, click the user or group that you want to
set Deny permissions for.
In the Permissions for UserName or GroupName list, click to select the Deny
check box next to Full Control, and then click OK.
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If a USB Storage Device Is Already Installed on the Computer
WARNING: If you use Registry Editor incorrectly, you may cause serious
problems that may require you to reinstall your operating system. Microsoft
cannot guarantee that you can solve problems that result from using
Registry Editor incorrectly. Use Registry Editor at your own risk. If a USB
storage device is already installed on the computer, set the Start value in
the following registry key to 4:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
When you do so, the USB storage device does not work when the user connects
the device to the computer. To set the Start value, follow these steps:
Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Locate, and then click the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
In the right pane, double-click Start.
In the Value data box, type 4, click Hexadecimal (if it is not already
selected), and then click OK.
Quit Registry Editor.
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Subbu
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