htid28

hi, i have a Huawei Echolife HG520b adsl modem router I also have a Netgear WNDR3300 that i would like to add to the network as the main router that all the computers connect to the WNDR3300 and the HG520b to act as just the modem. So the network map would look like this; LINE----HG520b-----WNDR3300-----COMPUTERS I have tried various things to achieve this but i cant get it to work, what steps do i need to take and what settings do i need to configure in each router?