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Question: The best router for conncetivity in a row house,

I stay in a row house. My triband connection is on first floor to operate my PC.
I hv purchased a new dell laptop with window 7. If i install DGN2000 will i get connectivity on my ground floor as well as on terrace for my laptop.
pls advice if any other model of netgear or any other company is suitable for me.