I know it can be done. Sorry if it's been asked before but I couldn't think of a good way to search for it.

fROM MICROSOFT: TECHNET ARTICLE 315231

Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
If you set a computer for automatic logon, anyone who can physically gain access to the computer can also gain access to everything that is on the computer, including any network or networks that the computer is connected to. Additionally, if you turn on automatic logon, the password is stored in the registry in plain text. The specific registry key that stores this value is remotely readable by the Authenticated Users group. Therefore, only use this setting if the computer is physically secured and if you make sure that users who you do not trust cannot remotely see the registry.

You can use Registry Editor to add your log on information. To do this, follow these steps: 1. Click Start, click Run, type regedit, and then click OK.
2. Locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon
3. Using your account name and password, double-click the DefaultUserName entry, type your user name, and then click OK.
4. Double-click the DefaultPassword entry, type your password under the value data box, and then click OK.

If there is no DefaultPassword value, create the value. To do this, follow these steps: a. In Registry Editor, click Edit, click New, and then click String Value.
b. Type DefaultPassword as the value name, and then press ENTER.
c. Double-click the newly created key, and then type your password in the Value Data box.
If no DefaultPassword string is specified, Windows XP automatically changes the value of the AutoAdminLogon registry key from 1 (true) to 0 (false) to turn off the AutoAdminLogon feature.
5. 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. To do this, follow these steps: a. In Registry Editor, click Edit, click New, and then click String Value.
b. Type AutoAdminLogon as the value name, and then press ENTER.
c. Double-click the newly created key, and then type 1 in the Value Data box.

6. Quit Registry Editor.
7. Click Start, click Restart, and then click OK.

That should do the trick.

Hi,

Another way to do it, without entering the registry is using Tweakui which is part of the powertoys package from microsoft. To get it go here: http://www.microsoft.com/windowsxp [...] rtoys.mspx

There are additional tools that you will find on that page as well. Once you've installed Tweakui, you will see that there is an option to automatically allow you to login. You just enter the credentials and next time you restart, it will take you directly to Windows.

Allan