How do i turn off mac filtering on my netgear wndr3300 rangemax dual band router through my computer/

MAC address filtering is configured in the wireless settings.
Connect a LAN cable from the Netgear to the LAN port on yourcomputer, open a browser and enter the Netgear configuration URL -
http://192.168.0.1
The default login = admin
The default PW = password You can now change the default admin password and configurethe wireless settings.
Go to the wireless configuration and set up the SSID and WPA or WPA2encryption.
Apply these settings to the wireless card in your laptop/computer.

To secure your wireless network from unauthorized access, please click on thislink and follow my instructions :- http://www.fixya.com/support/r3559128-wireless_router_security