instructions for dlink. same for any other except maybe a few variables
1
Log in to your wireless router by visiting "192.168.0.1" in your Internet browser. You will be prompted to enter a username and password. By default, the username is "admin" and the password field is blank.
2
Click the "Setup" tab and select the "Wireless Settings" menu. Click the "Manual Wireless Network Setup" button.
3
Check the indicated box to enable the wireless functions of the router. You will see four sections, one for each wireless network and one for each network's wireless security. To get the full benefits of your dual band router, you should complete the setup for each network.
4
Set up the 2.4GHz (GigaHertz) network first. Assign a unique name to the network. The rest of the settings are already optimized for this particular signal and should be left as they are by default, unless of course you are aware of your network's particular needs to adjust these settings.
5
Set up the 5GHz network. Assign a different name for this network. Once again, leave the default settings active. Click "Save Settings."
6
Connect your computers to the 2.4GHz network for basic Internet browsing, such as email, text-based articles and instant messaging. Connect any devices you use for high-definition video streaming and downloads to your 5GHz network. The network suffers less interference from nearby objects like cell phones, so the network is optimized for high demand traffic from your video game consoles, Netflix ready devices or other video streaming sources.
Read more: How to Take Advantage of the Dual Band Feature on a DLink Router | eHow.com
How to Take Advantage of the Dual Band Feature on a DLink Router | eHow.com