You are infected by virus..scan your computer with AVG 7.5. This antivirus is free and you can download it in the net.
Steps in enabling registry editor:
After scanning, go to run dialog box. Type gpedit.msc then goto:
User Configuration -> Administrative Templates -> System
in right-side pane, set "Prevent access to Registry editing tools" to either Not Configured or Disabled.
Steps in enabling Folder Options:
type "regedit" in the run dialog box then find "NoFolderOptions" in HKEY_CURRENT_USER. If it exist, set the value of it to 0 or delete it.
Now, try to check in the Control Panel if the Folder Options icon is already there. If still not exist. Try this step:
Type gpedit.msc then goto:
User Configuration -> Administrative Templates -> Windows Component -> Windows Explorer
in right-side pane, set "Removes the Folder Options menu item from the Tools menu" to Disabled.
Then try to check it again in the Control Panel if the Folder Options icon is already there.