How do I get the playstation 3 to connect to the internet….I’ve hooked up the ethernet cable from my computer to the ps3 and had the ps3 run an internet connection scan with no luck….It always displays connection failed….Please help.

i have a 2wire modem. i can connect my computer to it wireless using a wireless card. my ps3 is connected to it with an ethernet cable. the psp detects the modem 100%, but everytime it tries to obtain the ip adress, it times out. do i need to buy a wireless router? or is it possible to receive it from the modem? also, is it possible to connect the psp to the internet by connecting to the ps3?