Setting up a 5 GHz only network with my AirPort Extreme

"I recently purchased a 21.5" Samsung monitor that is connected to my late 2009 13" 2.26GHz 8GB RAM MacBook Pro through a VGA connection with the VGA to Mini DisplayPort adaptor. Since I've started using it, my Internet connection has slowed to a crawl. I've researched the issue online and external monitors can apparently created wireless interference. I'm using a 2011 AirPort Extreme 802.11n/b/g. Is there anything I can do to eliminate this interference?"
I posted this at this link https://discussions.apple.com/message/18254901?ac_cid=142432#18254901?ac_cid=142 432 and did receive an informative reply that led me to believe that my monitor currently broadcasts in the same wireless band that my MacBook Pro is reading on, in this case 2.4 GHz. I know the AirPort Extreme broadcasts in a 5 GHz band as well (which I thought I was, on all this time) and would prefer that my MBP read from that wave instead anyway (which should in turn solve my problem). I looked up how to do this and was told that by using AirPort Utility (version 6.0), and check to uniquely name the 5 GHz network, a separate 5 GHz only network should be created and selectabel under the Wi-Fi menu in the menu bar. I check this and restarted the router, but did not see the new network for the same router. I need to be able to force my MBP to read on the 5 GHz network since the 2.4 GHz network currently slows my internet connection to a crawl. Any advice on how to properly do this?

Something is amiss here.
Normally, if you enable the option to assign a separate name to the 5 GHz network, AirPort Utility simply adds 5 GHz to the name of your wireless network.
So, if your normal network is named......
Wireless Network, when you enable the 5 GHz option, another network is created with the name Wireless Network 5 GHz.
Once the AirPort Extreme is updated, you must click on the fan shaped AirPort icon at the top of the MBP screen, click Join Other Network, click Show Networks, and then select Wireless Network 5 GHz and enter the password to connect.
This action "points" the MBP to the 5 GHz network that you have named.
Next, you need to change the settings in AirPort Preferences to make sure that the 5 GHz network is located first at the top of the connection list....so the MBP will connect to the named network first, and automatically.
Unfortunately, "forcing" a Mac to connect to 5 GHz will not necessarily result in a better connecton if there are obstructions in the signal path between the Mac and AirPort Exteme.  5 GHz signals are significantly weaker than 2.4 GHz sigals, so they will not penetrate walls, ceilings and other obstructions nearly as effectively as 2.4 GHz signals.
Post back to tell us what steps you are performing now.....and what happens after each step so we can sort things out to see if 5 GHz will result in a better connection.

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    pcbjr wrote:
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    Hi Again,
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