|"I have a modem connected to a Wired Router (NETGEAR RP614) which is for my Ps3 to go online."|
How does your "computer", connect to the Router? Wired or Wireless?
Also, go to your command prompt (Windows Key + R then type CMD) and type the following command...
IPCONFIG /ALL > MyConfig.txt
This will make a MyConfig.txt in your Documents. Please paste the contents in a reply.