No sure if you need to use the WAN Ports vs LAN ports on the Linksys or not like DLink does. DLink routers don't use the WAN port and theres really no need for it when converting routers into APs. Just use the LAN port in back to connect between the Linksys and the DLink. Turn off everything on the linksys accept for wireless, since you don't need those features or will be using them. You'll be good.
I'm a bit confused now so if you don't mind a few questions
First an overview of my current network
Cable modem connects to my Dlink 655 router on the wan/internet port -- then I have 3 dlink gigabit switches conected to the 655 lan switch, and then various wired devices connected to the switches.
I am running dlink 655 wireless N for all wireless devices
My Audio Video REceiver is WIRED not wireless.
My Apple devices are both wired (itunes on computers) and wireless
So either I totally misunderstood what direction you are going for with or something I didn't convey correctly. What I want to do is if possible is remove my Audio Video Reciever from being found by Airplay devices (itunes on computers/wirless I devices) but still allow the AVR to have network/internet access.
I thought what you were suggesting is using the Linksys between the AVR and the gigabit switch it's connected to to put it on a different subnet.
So what I have done in preparation is the following
1) Changed linksys wrt54g from gateway to router
2) Gave the linksys a different third octet static ip address for the router
3) Set the linksys to have it's own dhcp server on for that octet set in step 2
4) set the linksys wan ip to the Dlink subnet but outside it's dhcp server range
5) Disabled the firewall and wireless on the Linksys
I have not plugged it in or set up port forwarding on the Dlink for the linksys.
I figured I'd go over everything again to best explain how I want things to be, what I'm currenty doing and what I was understanding from what you were saying.
I'm new to this and thank you for being patient so far with me.