Don't 'check' any of the Allow boxes !!!!
Just click start as instructed above ! If you click on any of the Allow buttons they effectively create 'holes' in your firewall to allow certain software/services to work !
The only service, you are currently using is iChat but we will test that once the firewall is on !
You shouldn't have any of the 'Allow' buttons ticked, at some point next week when I have more time I will (to be pre-arranged with you) do a quick "Attack" of your system just to check new Modem/Firewall etc is working okay !
Don't worry I won't do any harm, honest !!!!
Well if you can't trust your Brother, who can you trust....
Ric