Config Advisor scans for COM ports on your computer. In fact, it will search for COM1 thru COM256. It should find them. You may have already done this, but you can check in Device Manager for the serial ports that are active on your computer.
One other thing to keep in mind is that if you have another terminal program open at the same time that's using the COM port, Config Advisor will ignore that COM port since it cannot have read/write access to it while another program has that same port open.