I have an old iMac and an even older Performa 6200. The iMac has a network connection (connected to the internet via my home net) and an unused modem port. The Performa only has a modem port. Is there any way I can link these via a twisted RJ-11 cable to act as a modem connection from the Performa... Possibly by setting up the iMac as a host some how?