With that said, buy a good quality USB to serial convertor like an Edgeport or Byterunner. Saves mucho headaches and diagnosis time due to a less than adaquete serial adapter. Buy 4 - 8 ports as inevitably you will need it as your system grows. Keeps things cleaner.
I am surprised the netcallerID comes with a female serial end. thats a bummer. my serial ports are all female. I have no idea if the digi edgeport i bought has male or female (its not here yet). looks like i have to go out and get a converter. was hoping to get this up and running tonight.