I never faced this problem because I never trust any external stuff messing with my computer. Anyways, this virus spreads by USB pen drive. That too from autrun feature.
Looking into solution I found that you should first disable autrun of USB drives.

Here are the solutions:

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W32.USBWorm spreads through USB drives. Prevents user from using Firefox, shows message which reads, "I DNT HATE MOZILLA BUT USE IE OR ELSE..." The message header reads, "USE INTERNET EXPLORER YOU DOPE." Firefox is then closed by force. Also blocks "Orkut" and "YouTube" sites.

Solutions

Format the usb drive first (your data may loose) which carries the virus
Update : No need to frmat the USB Pen Drive, delete the autorun.inf file and any folder whose name ends with .exe in the pen drive.

Press Alt+Ctrl+Del --> you can see 'Task Manager' --> click on Process tab --> Locate 'SVCHOST.EXE' (will see many SVCHOST.EXE, but select the one having 'User Name' same as your Windows login name). --> Click End Process button

Now to delete the virus from your computer: Its easy..

Open Task Manager by holding Ctrl + Alt + Del and click on the process tab.

- Ignore the warning messages and stop the SVC.Host for the system's user name.

- Navigate to C:/Heap41a and delete the contents of the folder. Smile.

hiiiiiii etalkindia.com
i am thanks for ur site because my problem complete solve once again thanks all members amd web site holder

Hey.. that is nice to know that it is solved
Hope to see you all around !