Greetings, I have a very basic dectalk USB question, I am not sure if i am going to get this, but I am having trouble finding a dectalk express, and understand the USB unit can be used with a 9-pin port? I have no USB port, so must be firm on this before seeking one. I might add that I am not using windows either so again want to be sure it is still just a text to speech device controlled by one's respective program. Thanks, Karen