Enable Ctrl+Alt+Del in Windows 7 Home Premium (in the login screen)

Here is the way to enable Ctrl+Alt+Del key combination in Windows 7 Home Premium (in the login screen):

1. Type netplwiz in "Search programs and files" box in Start Menu
2. Select Advanced
3. Click on "Require users to press Ctrl+Alt+Delete"

When you log out, you should see the relevant requirement.

Get back the theme of Windows 2000 in Windows 7

To get back the theme of Windows 2000 in Windows 7, you need to right-click on Desktop. Then, you need to choose Personalize. After that, you should click on Windows Classic.

Change Windows 7 background

Firstly, right-click on Desktop and select Personalize. Secondly, click on Desktop Background. Thirdly, choose the colours or images you like.