YOU CAN STOP VIRUS ENTERING UR USB DRIVE

FRNDS If you have windows XP with SP2,
then you can disable the writing option to USB drives.

WHAT IT WILL DO?
This trick is very useful if you have virus in your computer and want to copy files from a USB Drive but don’t want to transfer virus to the USB.

STEPS to disable the USB writing option:

To edit the computer registry, first you should log onto your computer with administrative rights.

First click on Start button and type “Regedit” in Run option.

Here locate the location to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control

Here in right side panel, click right to create a key with the name “StorageDevicePolicies”.

Now in left side panel, select “StorageDevicePolicies” key, again right click to create new DWORD value then label it “WriteProtect”. Set its value to “1″. But again to enable writing, set its values to “0″.
THATS IT

Now close the registry editor and restart your computer after any changes to go into effect.