<Could I attach two PC motherboards (ISA? PS/2? PCI? EISA? NuBUS? <Others?) together via a ribbon cable by the bus connectors and then <transfer data among them, of course having written the approporiate <drivers? Only if you want to kill both of them. Use the parallel port via laplink or other software. Technically it can be done via the bus if you created an interface card to resolve the bus conflicts that would result from a direct connection. Allison