I have a Dlink DGL 4300...I have 2 dell laptops....2 desk top pc's......xbox.....slingbox....I am wifi and hard wired through out my home. So I have a 4 port wifi router with a 8 port extension ....all is working well. I just bought an apple hifi speaker with an airport express. I was hoping to control the speaker wirelessly from my laptop....so now I went out a got an airport base station extreme. however I'm having one tough time setting it up with my existing network. I bought the base station to talk to the airport express so I can send music via airtunes to the hifi speaker. I need help with the router configuration....I'm totally lost and fed up....any help would be greatly appreciatted