Cheerio,
I would be very interested to know how said youth got into the admin account (safe mode makes no difference, it is the same account). Did he a) know the password, b) guess the password or c) use a password cracking tool? Or some other method?
I just feel that you are fighting a losing battle against such technical whizz-kids
If they can circumvent such security as Windows XP offers (not great, admittedly), I wonder how long a dongle will last...
SD