the title pretty much is my question. I need to set up two mac Laptops to be on the same network so i can use his optical drive to upgrade to snow leopard it says to have the two on the same network in the manual and im having trouble doing this my isp is att ethernet and his is comcast cable ethernet when i tried to set up a network using the network set up assistant it gave me a warning saying i could be removed by the isp for messing up the network so i stopped and can find no info on how to get around that or if its really that severe to continue any help would be appreciated and thank you!