Try this, and lets us know if it works.
Launch Windows Explorer or My Computer.
Click on the Tools at the menu bar, then click on Folder Options.
Click on View tab.
In the Advanced Settings section at the bottom of the list, uncheck and unselect (clear the tick) on the “Use simple file sharing (Recommended)” check box.
Click OK.
Security tab is available only to Administrator or users with administrative rights. So make sure you login as one. And security can only be set in an NTFS partition. If you’re still having problem to reveal or display the Security tab on files or folder properties, check out the following registry hack and set the value to 0 or simply delete the key:
HKEY_CURRENT_USER/Software\Microsoft\windows\CurrentVersion\Policies \Explorer/Nosecuritytab
Type: REG_DWORD
Value: 1
To get to the registry key (if you are not sure) just click on 'Start' then 'Run' and type regedit then press enter. Be careful when editing the registry, if you edit or delete the wrong key you could disable your system. If you need more detailed help to navigate to the key just ask and we will guide you there.
If you’re using a Windows XP Professional system that is installed in a Workgroup, the Security tab is also hidden by default because in Windows XP Home Edition and Windows XP Professional, guests are forced to log on to a workgroup. Follow the instruction and information in
Microsoft Knowledge Base where you need to set the value for ForceGuest registry key.