If you have a Windows XP Professional machine and you want to set it to automatically logon a user, use the Tweak UI Power Toy.

If you have a Windows XP Professional or Windows 2000 machine and you want to set it to STOP automatically logging in a user, clear the saved User ID and Password that is stored in the registry.  See Q234562 for details.

It appears that the parent company of Wrox books has gone under, taking Wrox with it.  The part that really bites is that all authors who are due royalties on existing book sales are out of luck.

Here are some links that tell the story.

http://www.theregister.co.uk/content/4/29790.html

http://www.hotfootmail.com/hotfeet/

Sigh...They were fairly nice people, and I was happy to have my tiny face on two.