...and i see a section in the Admin Utility WDS tab that say Relay or Remote! Which one do i set it to? and is WDS the same as a Bridge?
You don't want WDS. That is used for wirelessly connecting base stations. It is not applicable when you are connecting them via Ethernet.
In "AirPort Admin Utility", to configure the AEBS as a bridge you would disable the option to distribute IP addresses.
Why does apple make it so hard to update software.. the firmware on this is 5.7 Where do i go to get the latest Firmware and Windows Software.
That is the latest firmware for that base station.
Also you mentioned to turn this into a Bridge, However i need the Round station to distribute IP's to B/G clients...
Why do you need that? In the dual band network you reference all the older AEBS is configured as a bridge. All of the clients (802.11n, 802.11b/g, and Ethernet) get IP addresses from the 802.11n AEBS.
...but im hooking up the AEBSn to the Wan port will this work?
Do you mean that you are connecting the internet to the round AEBS's WAN port? If that is the case then you want to operate the 802.11n AEBS as a bridge... not the round AEBS.