Yes, I did go through the website page that DLKK2004 recomended, replaced userinit.exe in the registry, and it worked out perfectly. But I finally reinstalled my windowsxp because some damages that sparewares have done to the system is unrecoverable.
To: DLKK2004, Thanks very much for your information, I will try. Internet community is more attractive because of warm-hearted person like you. I really appreaciate.