Help me in getting a software which can disable and enable xp pro login screen?

Keeping the machine password protected is recommended if your computer is around people with whom you don’t want to share your private data. Smaller environments such as a home or an office can be trusted enough to go without requiring a password. There is not a software which can do this but I have found a shortcut which will help you out in enabling / disabling the username password prompt.

1. Click 'Start' and click on 'Run'.

2. Type control userpasswords2 and click on Run.

3. Select the user for whom you would like to enable / disable the login.

4. Uncheck or the box saying 'Users must enter a user name & password to use this system' to disable the username password screen and allow the Windows to automatically login and bring the user directly to the desktop. Check the box to enable username & password protection.

Hope this helps you out.