How To Lock USB Ports

                      

To do this you have to make a registry tweak that will prevent writing to the usb port in 

Windows XP.

1) Go to Start Than Run and type 'Regedit'.

2) Navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control.

3) Here add a new folder on the left pane by right clicking on it and selecting 'New Key'.

4) Name this folder 'StorageDevicePolicies'.

5) Click this new folder and in the window on the right create a new DWORD value, 

    label it and Write Protect, give it a value of '1'.

6) Now users will not be able to write any data on the USB.

To turn it off just set the value to '0'