This newsgroup is not for general Internet questions. It is for computer
developers who develop applications using Microsoft's ".NET" application
development platform.

Your best bet is to try another newsgroup more suited to your question, but
in general, if you set up your computer so that each person who uses it has
their own user id and password, and you make your account an administrator
account, but your kids accounts just normal user accounts AND you set up
your hard drive using the NTFS file system (if it is a newer computer, it is
probably already set up this way), then you can keep what you are doing
private from others who use the computer.  Oh yeah, make sure your wireless
network security is turned on so that your neighbors can't hitch a free ride
to the Internet on your bandwith.