Hi, I recently came upon a Macintosh PowerPC Performa 6400/180 running OS 8.5. I added a PCI Ethernet Card that was likely pulled from a PC. Im sure the card works fine. I cannot connect to the internet for some reason. The lights on the Ethernet card come on, Internet Explorer 4 starts up, and I'm sure that my home network is fine. I'm trying to connect with 10/100 High-Speed AT&T Internet. Does this PCI Ethernet card work with Mac? Why can't I connect? Any help will be appreciated. Thanks. 