Hiya, Okay, I guess we've pretty much established that a PCI serial adapter won't work, contrary to what I heard from the hardware guy I talked to. Hm. What're the odds that my motherboard has a serial port inbuilt into it? I've had this computer for a couple years. Windows isn't saying anything about a COM port. Aside from that, are there any known options for serial communication which have been tried out and work? If so, what, and if not, what else can I try? Thanks much, Zack.