Is it possible to get all the versions of PGM-WIN?
Yes, please find the available versions at Clear-Com Support Download Center - Matrix+3 (Discontinued)
The software is designed for use with legacy 32-bit Windows XP and older platforms that run native 32-bit applications.
Running it on Windows 7 64-bit platforms? Please see this Solution.
Here are instructions for connecting the Matrix+3 to a PC.
More info on this Solution (Which Serial Com Ports Does Matrix+3 PGM-WIN Recognize?)