Here is my problem. I have a Dell Laptop computer with Windows XP Home installed. This laptop has no serial port installed. Up to now, I have been using a USB to serial converter, which my computer has designated as COM 7. When using CX Programmer (OMRON) and S7 (SIEMENS), I am allowed to select COM 7 as an option for communicating. My problem is that I am trying to download a program using PROTOOL (SIEMENS) and it only allows me to select either COM 1 or COM 2. I would like to reassign my comm ports so that the USB port will be either com 1 or 2. Is this possible? Thanks, in advance.