troubelwith wireless

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i just bought the avertec 6100 from compusa...i have netgear wirelss running in m house, but the connection keeps goin in and out...every so often i have to go and repair the signal...i have used other computers on the wireless network and they work fine...i am not that familiar with setting up the network and all that, so i am not sure whether its the computer, the network, or something in the settings i have to change..any help thanks