The mac filtering on router should work no problem at all even if you have a old or new firmware version .
With this setting you will be able to allow or deny internet access to computers
If you have this setting turn on you will be able to connect wireless up to 108 mbps with super g mode enable,
Just don't turn on security on router .
The only issue you will have is any computer you add to connect to the router for the first time after turning on mac address filtering you will need to add the mac address of the computer on the mac filtering options of router ..
hope info works for you :