I Have a 7100/66 hooked up to my Imac and they both work fine. First, I had to buy a ethernet card which was about $60 to 80 dallors. Next, get a cross over cable. Lastly get 8.1 or 8.5 on the 6100 (It helps alot). I'll tell you one thing if your thinking about playing Marathon or Quake on your network!! Then you'd better look at upgraging the 6100 fast. (Small screen sucks)