can someone who really knows tell me if i nee to have wires running from my pc which is upstairs to my ps3 and lcd tv that is downstairs,i am new to this and i am looking for as much information as possible,is there anyone who actualy has this working

What are you trying to do exactly?

If your talking about having an internet connection on your PS3 it has built in WIFI which means it can connect to the internet without wires. But you will still need to transmit a internet signal to your PS3 and to do this you will need a router. This is connected to your modem (Which in your case is upstairs connected to your PC). So if thats what your asking then no you dont need to run a cable all the way down stairs to get the net.

a connection to the server cannot be estabished,this is the message i get when i try connect to the internet on the ps3,i have the router set up and the ps3 has picked it up but i still canot connect,any ideas.