Now that I have downloaded Tacview, how do I install it?
To install Tacview, simply run the installer. Tacview is programmed to install itself correctly with no further action required on your part.
Troubleshooting
DCS World
If the automatic installation has failed, you can manually install the exporter yourself by copying the content of C:\Program Files (x86)\Tacview\DCS\ in your %USERPROFILE%\Saved Games\DCS\ folder.
If you have multiple versions of DCS World installed on your system, you may want to copy the exporter in all of your %USERPROFILE%\Saved Games\DCS.*\ folders. If you are using third party scripts with DCS World, *DO NOT* copy C:\Program Files (x86)\Tacview\DCS\Scripts\Export.lua in your DCS World script folder. Just add the following line in your current %USERPROFILE%\Saved Games\DCS\Scripts\Export.lua script:
local Tacviewlfs=require('lfs');dofile(Tacviewlfs.writedir()..'Scripts/TacviewGameExport.lua')