What do you mean "mac has no internet"? Are you talking about your PowerMac 7500? your PowerBook 2400c? what? SneakerNet will work. However, I recommend that you use your PM 7500 computer as your primary machine rather than that Windows POS. Your Mac has 10B-T built-in. You can get a PC Card for your PowerBook. If you have broadband, a router will make all three computers equal citizens on the 'Net.