Yup
What you want to do is to disable the dns proxy (if there is such a thing on the wbr) and most importantly, disable the DHCP server on the WBR-2310...
After this, simply plus a cable in one of the LAN ports of the WBR and the other end in a LAN port of the DIR.
Forget the WAN port on the WBR-2310.
With this setup, you will be using the WBR as a simple switch.
Alex