My pc has a serial port which I use.... but I have been looking at new pc's and almost none now ship with a serial port. I was surprised to see how much it costs for a PCI card. Still only about $35-60, but when you see all the firewire, usb2 even esata stuff you can get for about $14.... I guess the manufucturs know there is a captive market, especially since none of the pc manufacturuers seem to be using them anymore. A lot of pc's used by retail stores need at least one or two serial ports...
Andrew