Try Option #1 here, http://windowsxp.mvps.org/Autologon.htm. However, it may be in your best interest to continue logging in for security reasons.
Let me know if this works for you!
I have Windows XP Pro, sp3.
Is there a way to log on automatically? I know that "Tweak UI" supposedly provides that capability but it doesn't work for me. If someone can tell me how to log on automatically, please do so.