I just installed a new Airport Extreme card in my G5 1.8 iMac. I want to use it for Airtunes, and so am trying for it to "connect" with an Airport Express, also just purchased. Currently, the Airport Express is about 45 feet away WITHIN DIRECT LINE OF SIGHT OF MY COMPUTER!!!! And still my connections are super-weak to non-existant!!!! I have reset the card and made sure the antenna is all-the-way plugged into the card. I have run MacStumbler, and generally, when it connects, the signal is, at most, a weak "26". Is this just a really poor product by Apple, which I should cut my losses on and return, or am I missing something really obvious?