So I just picked up an Airport Extreme card from Apple, installed it, and have been thoroughly confused. When my ibook is on the table a few inches away from the router, I get iffy signal strength ranging from 1 bar to 3, but never full strength. Beyond 5 feet of the router I get at the most 1 bar, but usually zero. At 10 feet I never get any signal I tried checking to see if I didn't install it correctly, but everything looks fine. I'm using a 1 ghz G4 ibook that's not even a year old and has never had any problems. Does anyone have any advice as to what I should try?