Okay, someone told me that I had to have an Airport card in order to hook up two computers (Dell PC & G3 iMac) to a Linksys B Router. Is this true? If it is then I might as well sell the iMac because I'm not willing to spend a lot of money to get my iMac to the internet. All I would like to know is can I just hook up a router to the cable modem and run lines to the Dell and G3 iMac? Do I really need an Airport card? Thanks.