DNS 807101102 error WIRED, help please.

Hello. I want to connect to internet with my jailbreak'd ps3. I tried first time with a switch, I entered the net cable in 1, in 2 the cable which goes to PC and in 3 the cable to ps3. The internet on PC works fine, but I can't connect in PS3! I searched 1-2 hours a fix and I tried tons of DNS-uri from "SOLVED" topics. I don't want to buy a router. Someone told me that I can do "internet sharing" or smth link that if I buy another network board (it's really cheap). I want to know if that way it will work.

PS: I tried to enter the net cable directly to ps3, but the same problem... I also searched in cmd the real dns (or smth like this) and they were good. I Can't get to fix this... Please, help me!

Thank you very much!