Here are some ideas you can pass on to your friend:
System Security
1. Set up a screen saver to come on after a short period of
time. The screen saver should be password protected. Control
Panel -> Display -> Screen Saver page -> Check "On resume, show
the Welcome Screen".
2. If the computer is set up to go into standby after a certain
amount of time, this should be password protected as well.
Control Panel -> Power Options -> Advanced page -> Check
"Prompt for password when computer resumes from standby".
3. The kids should have limited accounts. Only adults should be
computer administrators.
4. If she's using Outlook Express for email, she should create
separate identities for each email user. The identities should
have their own passwords. Other email programs offer similar
security options.
File and Folder Security
Odds are that your friend's computer will be running the Home
Edition of Windows XP. That will limit the options she has
available when trying to protect her files. As long as she
keeps her important files in her My Documents folder, the kids
won't be able to gain access.
One potential problem would be if the kids figured out how to
enable the "Make this folder private" option for their My
Documents file. If they did this, even the administrators group
would not have access. In order to access this folder she'd
need to give her account or the administrators group full
control permissions. In XP Home Edition, this can only be done
when the computer is running in Safe Mode. If you want more
info on this subject go to Start -> Help and Support and enter
"Make your folders private" in the Search box. Take a look at
the items listed under "Full-text Search Matches".
Here's a Microsoft article that you might want to take a look
at:
How to configure file sharing in Windows XP
http://support.microsoft.com/default.aspx?scid=kb;en-us;304040
Good luck
Nepatsfan