Thanks for the response RealBeast. From everything that I've read your method will work. However, what I ended up doing (before I read your reply) was using the older wndr3400v1 as my base and the newer wndrv3400v3 as the Access Point. Both had been setup with the same SSID, Security Settings and Password. Before connecting them over a wired LAN, I did connect a laptop with an ethernet cable to the wndr3400ve. Under Advanced Settings, Wireless Settings, there is the option of enabling AP Mode. The wndr3400v3 manual notes that this exists but gives no explanation of how to use it. Anyway, when I enabled AP Mode, some empty boxes poped up for entry of IP and subnet etc. I left these empty and hit the apply button. Evidently these boxes have defaults. When the screen repainted, the boxes were filled in. So, I then turned off the wndr3400v3 and moved it to the area that was barely receiving a wireless signal. I plugged it in and it came on line. I turned on my tablet and it showed no wireless signal (as usual for this area of the building). I had previously run an ethernet cable to this area. This cable is connected to the wndr3400v1. I plugged it in to the wndr3400v3 and within a few seconds my tablet showed an excellent signal. As a matter of fact, the whole building is now filled with excellent wireless signal. I find this remarkable since this 4,000 square foot building is built entirely of stone, inside and out.
I pulled up the attached devices screen on the wndr3400v1, and it showed the wndr3400v3 with a dynamically assigned address along with its MAC number. Note that on both routers I left the Channel selection set to Auto.
I find it curious that the wndr3400v3 manual says so very little about the AP Mode - other than that it exists. I also find it curious that the support page (Managing Your Device and Network) at Netgear for the wndr3400v3 shows the following on Page 4:
"II. A Second Router to use as a Wireless Access Point
With this solution you disable features of a wireless router, leaving the wireless transmitter working. This configuration uses an existing wired or wireless router.
Advantages
• Low cost. With an inexpensive router, this is the cheapest solution.
Disadvantages
• NETGEAR provides no free support at all for this.
• NETGEAR routers are not designed for this purpose, so configuration, behavior, features, and performance may not be as expected. Problems may include no DHCP passthrough and stopping access point roaming.
• Only suitable for small, moderately loaded networks. E.g., not good for running a game server or a database server.
• Can be slightly difficult to configure."
Whatever.
Again, thanks for the reply. I hope this helps somebody else.