For Windows XP I have my computer set so that you have to press ctrl+alt+del and then input both the username and password to sign in. My problem is that it logs the username and the next time I open my computer the username field is already filled in. How can I turn this of?
Use Group Policy to accomplish this:
To actually get into Group Policy, run
You'll need to Admin privileges to make this change.
For Home edition of Windows XP, you need to edit the registry. Details on what registry key/value needs to be changed can be found here. While the document is for Windows 2000, it applies equally to Windows XP.