Well, from what I can ascertain from your first post, you are running the computer with Administrator as the default log-in and with a blank password, which is definitely a security risk. Which is why I suggested setting up an Administrator account in your name or with your chosen user name and a password that is not easily guessed at, which precludes using your birthday, real name ... you know, something easily figured out by a hacker.
Learn more about security risks here:
<A HREF="http://www.microsoft.com/technet/security/bulletin/glossary.asp?frame=true" target="_new">Microsoft Security Advisor Program: Glossary of Terms</A>
Of course, I'm also under the impression that you would like to restrict the access of certain members of your family, which means not giving them administrative privileges, so changing the default log-in and password would be a good step in that direction. You'll notice that it is also mentioned in one of the links I included that users can be forced to use Ctrl+Alt+Del before logging in, if you prefer.
A great deal of this can be controlled by going to Start\Run, and typing in gpedit.msc, which is the Group Policy Editor.
You may find these links to be interesting:
<A HREF="http://www.wown.com/j_helmig/winxpgpe.htm" target="_new">Windows XP : Group Policy Editor</A>
<A HREF="http://www.jsifaq.com/SUBI/tip4300/rh4302.htm" target="_new">How do I use the Group Policy Editor, in Windows XP, to change local policy settings for the computer or for users?</A>
<A HREF="http://www.nswc.navy.mil/ISSEC/Form/AccredForms/acc_part2_XP_help.html" target="_new">Windows XP Risk Assessment Helpfile</A>
Toejam31
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