making a network for the first time...help!!!!

hi, i am making a network in my house using an iBook G4, my dads laptop (PC) and i also want to add my Playstation2 so i can play online, i am using broadband with a USB ADSL modem.

can anyone help me with what i need??? how do i set it up???

Cheers

Chris

Your modem needs to be ethernet to work

depends on the usb adsl modem:
Does it have multiple network ports (i.e. can it function as a router?) or does it only have the 1?

If it has multiple, hook up the machines to the router and you should be able to have it automatically assign IP addresses (using DHCP) and thus network the machines.

If not, then you'll need to share the internet connection using whichever machines is plugged in directly...