Because that's what I wanted to do today. My dad got a wireless card for his older laptop, and installed it, but it didn't seem to want to connect to our router that we have, and that I and my brother have been using just fine. So I whip out my iBook to see if we can do a computer to computer network, and bam, now I can't connect to the router. We go check my brother, and he's still surfing away. Well, to make a long story short, we do all kinds of trouble shooting. He has a USB wireless adapter,...