My dad recently put in a new wireless router (a D-Link 802.11n model) at my house. My aluminum 12" powerbook with an airport extreme card suddenly gets much worse reception at home than ever before (previously with a 2Wire 802.11b model). The problem isn't so much speed or reliability when I'm connected, but the range. I used to be able to get a connection on the second floor (the router is in the basement, right where the old one always was) but now I can only connect at my kitchen table, one floor directly above the router. I can't even connect when I'm in the basement. What am I doing wrong? What can I do to fix this, if anything? Please help! Thanks.