I am already using this program. In fact, I think you helped me set it up. Yes, I do remember seeing the pairs because I set it up. Now what about getting Virtual VP to work with a Davis Instruments Weather Monitor II?
To reiterate, I don't think VirtualVP will work with a different datalogger.
However, I don't think you need VirtualVP. It's not VirtualVP that's really doing the work, it's the virtual serial port driver, com0com in your case. The VirtualVP is really just a status monitor. If you haven't already, try running your different weather programs, each using a different COM port (the lower number in each pair).