Make sure you have an old DIVX player and the AC3 sound filter (get them here).

• Get to the file
  
  • Go to the Megashares page.
  • Chose the "Free Service" option.
    
  • Reactivate your passport if it needs to be reactivated.
    

    
• Use the bookmarklet
  
  • copy this link: Megashares-Streamer bookmarklet (right-click, "copy link location" or "copy link address").
    
  • paste it in the address bar of the Megashares page and press Enter.
    

    

a DIVX player will appear and the video will start playing in it.