Computer is an Emac with 1 cpu @ 1.25 ghz. I believe it has the ATI graphics @ 32mb. This computer does not have an airport card installed on it, however I am looking to buy one and install myself. Question is, is there a specific model number I need? I have read there are several different versions. One being called the airport card, another called airport extreme and then there are several different variations of both. At least that's what I've heard. Can anyone point me in the right direction for which card I should get?