How to unlock Homepage in Internet Explorer

Click on Start->Run and type notepad.Notepad program will be opened. Now copy and paste the whole code below and save it as HomePageUnlock.reg.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel]
"HomePage"=dword:00000000
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel]
"HomePage"=dword:00000000
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\LocalUser\Software\Policies\Microsoft\Internet Explorer\Control Panel]
"HomePage"=dword:00000001
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\LocalUser\Software\Policies\Microsoft\Internet Explorer\Control Panel]
"**del.HomePage"=" "
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoSaveSettings"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\LocalUser\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoSaveSettings"=dword:00000000
Double click the HomePageUnlock.reg file and accept to write the registry.