"Retro's data" was re-written by Firebird and the Commserver app is only needed if you are going to be driving lights and indicators in your pit. Also, the only reason for a 2nd PC.
In this case, you would use MaxiVista to port the MFDs over to the 2nd PC.
However, if you only want the MFD displays on another monitor, you do not need Commserver, or a 2nd PC.
Just connect the other monitor to the 2nd monitor port of a dual head video card and adjust the end of the .ini file.
export_mfd=1
*tip: export_mfd_adapter=? may be any number, not necessarily #2.