PREVENTING USERS FROM WRITING TO USB

This following registry setting will prevent writing to usb in windows xp
.

Follow this Step:
1)  Goto -> Start menu -> press run -> type regedit
Find HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control

Add a new key and name it "StorageDevicePolicies".

2)In the window on the right, Create a new DWORD value and label it WriteProtect, give it a value of "1" and users can no longer write to USB drives. HAHAHA (evil laugh)

Note: Giving a value of "0" will allow to write again.