I'm not sure because I don't have a ps3.
But it depends what kind of connection you want.
Use a ethernet cable(a blue wire with phone jacks on each end.) It connects to your phone jack, and the ps3.
And for wireless I'm assuming the ps3 has a wireless card. So get a router or gateway and put the ip address and other information into the ps3 manually or if it has a network scan set it to automatic.
Hope this helps you out.