Think your spouse is hiding their tracks on the computer? Prevent them from deleting the browsing history with this great trick – for Internet Explorer Only.
Go to Start->Run and type in “regedit”. Click Ok to launch Windows Registry Editor. Browse to HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel
If you get to the Microsoft key folder and don’t see keys for Internet Explorer\Control Panel, you’ll need to add Internet Explorer as a subkey of Microsoft and Control Panel as a subkey of Internet Explorer. Do this by right clicking the Control Panel folder and going to New->Key.
In the Control Panel folder, create a new DWORD value by right clicking and going to New->DWORD Value. Name it History. Now right-click the History value and choose Modify. Change the data from 0 to 1.
Now when you try to clear the history in Internet Explorer, the option will be greyed out!