if ur not getting a router till monday, whos router are u goin to try and hack into, ds's dont have very long range. also, if a router doesnt have a password, u can just connect to it. u really cant "hack" a router with a ds.
well, if you can't get into their network, then hop on out to your nearest starbucks, grab a cup of coffee (or something else that suits you) and enjoy their quiet atmosphere and free wifi. (thats free if you buy drink.)