How do you remove the logon dialogue in windows?

To disable the logon prompt on windows is very easy, either of this options will help in solving the problem;
Option One:
The easier option;
You will be asked to provide a username and a password by the system that it should log into default.
Option Two:
Here you will need to edit the registry so that it can store the log in credentials. You should however note that in case you mistakenly edit the registry incorrectly, it may results in to serious problems and get your computer corrupted. Because of these, please make a backup of your registry before proceeding. Follow these steps to create a registry backup.
You will receive a prompt in case the System Restore is turned off asking if you want to turn it on, click Yes. In the System Properties dialog box, click to clear the Turn off System Restore check box the click ok and repeat the step again. Then follow these steps carefuly;
In case the DefaultPassword value is missing, create the one with the following steps;
Take note that in case the DefaultPassword registry entry in non existence, Windows XP will automatically change the value of the AutoAdminLogonregistry key from 1 (true) to 0 (false) to turn off the AutoAdminLogon feature after the computer is restarted.
Double-click the AutoAdminLogon entry, type 1 in the Value Data box, and then click OK. If there is no AutoAdminLogon entry, create the entry with the following steps;
You can the log in automatically after your computer has restarted and Windows XP is running.