Hi, Scott.
The interesting files are probably here:
C:\Documents and Settings\(your profile name)\Application Data\PingPlotter
Normally, that's the primary place where files are stored, rather than in your Program Files directory. You can move these to the same place on the new machine.
On most new OSes (Windows 7, 8, 10), the files in Program Files are only used to load the "default" values, and then the ones in your profile are added on top. Leaving the default files in Program Files, and putting the ones with your modifications into the profile folder is usually recommended.
Hopefully, that clears things up.
- Pete