AEBS won't assign IP via Wired ports, but it does assign IP Wirelessly

I'm having the strangest problem, my AEBS will assign an IP address in the 192.168.1.X range when connected to it wirelessly, but when I connect to it via one of the wired ethernet ports in the back I get a bad IP (169.XXX.XXX.XX).
This started happening over the weekend and I have tried reseting the unit and still can't get the AEBS to assign the correct IP over Wired ports, not even to a Airport Extreme connected via wired ethernet on another room (all I get is the amber flashing light on the AX).
Any help would be appreciated.
Black MacBook, Intel iMac & Mini Dual Mac OS X (10.4.9)

Hi Duane,
Yes I did configure my AEBS to give IP's in the range of 192.168.1.XXX. But when I connect my MacBook via Airport I get the correct 192.168.1.XXX IP, but if I connect it via Wired Ethernet i get the other 169.XXX.XXX.XXX address. This also happens with my Airport Express that it also gets an IP in the 169.XXX.XXX.XXX range which is consistent when a device doesn't issue a correct IP address.
Any help is much appreciated

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