I'm looking to buy a laptop for the first time. I live in a large ground floor flat. My main use for the laptop would be been able to access the internet with Wi Fi. throughout my flat, garden etc. How can I tell if my desktop PC Router is 802.11n and the wireless card installed in the laptop supports 802.11n. I'm told 802.11n is the best range. I've never used WI Fi so this all new to me.