Ok just to put my
in as mrsmac2006 has the computers next to each other and she wants to keep an eye on what the children are doing and have control when they have access to the internet why not share the connection with her computer being the master PC with two NICs (network interface card) and the children’s computer being the slave with one NIC then all you need is a crossover cable and hey presto both computers have access to the internet.
The master computer could have a password set so unless it has been started with the password the children have no access to the internet.
While this is a little harder to set-up than a router its quite easy to set-up