I am trying to invite my friends on multiplayer mode and not all my friends are listed. I contacted RockStar and they tried to help me but they had no luck. They told me to forward ports on my Wireless Router and I had no luck there. I contacted my Router Manufacture and they told me about a feature that would allow my PS3 to go around the Firewall, but that did not work. If you have any question's about anything about this or my products ask them.

I need help.
Thank you.

Video Game Consoles & Games - Rockstar Games - Grand Theft Auto IV for PlayStation 3