PS3 DEX RTE Help!

ok so i just converted my PS3 From CEX to DEX i am having trouble Using RTE now

i have hooked up a ethernet cable from my PC to my PS3 on my pc i have right clicked "local area Connection" and went to properties and enabled the 2 boxes and i do a internet connection test and it "fails" and when i try and sign in it says to sort out my network settings on windows the Local area connection says "Unidentified Network"

Any Help