This instructable is on how to make you press Ctrl+Alt+Delete before you logon.
This is fairly easy to do.
Step 1: Disable Welcome Screen
For this to work, we have to disable the welcome screen. To do this, Start\Control Panel\User Accounts\User Accounts\Change the way users log on and off\clear Use Welcome Screen Checkbox
Step 2: Disable Welcome Screen
Sorry, My browser messed up and made 2 step 1s
Ignore THIS STEP!
Step 3: Run the Regedit.exe File
To make this work, you have to mess with your registry. If you mess up your computer, I will not be held liable for any damage!!!!! So open regedit. Start\Run\Regedit . Now the hard part! You're in Registry Editor! Go HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\winlogon. Now just click on winlogon folder you should see a bunch of entries.
Step 4: Make It Do Your Bidding
Click edit\add\DWORD Value Now follow the pictures.