[Blind-sysadmins] Solved my own problem

What you have to do in order to successfully change the router address on a DLink DIR655 router is to first revoke all the reserved IP addresses. Then and only then will it let you change and permanently save the change of the router's base IP address! Once that was done, I was back on my old network with my printer and Synology box showing up once again. Yaha!