I connect to the Internet using a dial up from an Airport Extreme base station. An iMac is connected wirelesly and I can use a menu option in the Airport menu item to make the modem dial up. There's also an eMac connected on the ethernet port. I can't find a way to tell the modem to dial up using the eMac. Is this possible? There's an option to set the modem to dial up automatically, but when that option is checked the modem insists it should dial up and stay connected as long as any of the computers are turned on.