Everyone knows that for best wireless performance with a digital media receiver, especially when streaming HD video, one has to use an wireless "n" router.  What people usually don't know is that a wireless router needs to meet requests from all clients (including the legacy b, g, and a devices) so any client with a legacy receiver (say a printer with wireless "g", or a laptop with wireless "b") can in effect slow down or downgrade your overall performance.

The easiest solution is of course to buy an "n" router with DUAL and simultaneously working radios (one at 2.4 GHZ and one at 5 GHz).  You use two separate SSIDs and you can use one (the 5 GHz) in dedicated "n" mode and the other (2.4 GHz) in legacy "b/g/" mode.

However, even if you have an "n" router with a single radio (or two radios but only one can be up - like the Apple Airport), there is a way to improve performance by still using your OLD wireless router.  In other words - don't throw away your router. 

The following picture shows the basic setup:

You use your "n" router as the primary router for all "n" devices, including your MediaSmart Connect or MediaSmart TV. This is the primary DHCP server for the whole network, and use it in its best performance mode (dedicated "n" at 5 GHz if available).

You connect your old router to one of the LAN ports of your wireless "n" router, and you configure it in "bridge" mode.  Bridge mode means that there is no DHCP server running on this router (all IP's will be provided by the "n" router" and connects to the Internet via your "n" router).

Some routers have an explicit bridge mode, some others you may need to ask tech support of your router company for some help.  You use the old router for legacy b/g devices like printers and old laptops.

Make sure that every router has a different SSID (say home-n and home-g), but they can certainly share a common security password.