Try "mode com1 96,n,8,1" whith out the quotes. I don't know what the serial settings are for the dectalk. The setting abuv works whith the doubletalk light. BTW I got away from using the mode command to set the serial port on a dos boot floppy or in dos was to go into the bios setup and change the serial port from auto to 03f8 - 03ff irq 4. I don't know why this has an effect on using the mode command, but it does. Pete