@Android step 9 in the 1st post is the only step taken on the PS3. You actually dont do anything since the PS3 will make the changes for you. I dont think it would affect your PSN settings either since you would need to unplug the ethernet cable from the PC and back into your router for PSN mode and the PS3 would automatically search for connection again(maybe just a game or console reboot).
As long as everything is setup properly on your PC side and with your router you cant go wrong.
Last edited by bruiser brody; 06-16-2011 at 07:00 AM.