As other people suggested you have to have a password for scheduler to
work. But this also means you have to type password every time you
restart machine. For you, if convenience is more important then
security, you can configure Windows XP to automate the logon process.
Click on Start -> Control Panel -> User Accounts.
Uncheck the "Users must enter a username and password to use this
computer" check box.
Click Apply.
Enter the user name and password you wish to automatically log on with,
and then click OK.
Click OK again and you're all done.
This feature allows other users to start your computer and use the
account that you establish to automatically log on. Enabling auto logon
makes your computer more convenient to use, but can pose a security
risk since anyone can just turn the machine on and access your files.
Tethys Solutions, Expert Services Group
http://www.tethyssolutions.com/ask-the-expert.htm
SMART Macro & Automation Software