Tried again with 6.2.1. No can do.
The package will not install using the default installer.
- The Microsoft Text-To-Speech component (/Streets/MSMap/Redist/MSTTSEng_21) installs successfully
- Microsoft .NET Framework 1.1 (/Streets/MSMap/Redist/DotNexFX) does NOT install
- Microsoft Streets & Trips 2007 core (/Streets/MSMap/data.msi) will install successfully.
However, without .NET, the program will run and after ~3 minutes on the splash screen, a window will pop up telling you the map templates are corrupt and the program will quit even if you continue.