How to install AC72 and AC72A boats for vsk5:
1) Download the AC72.zip or AC72 A.zip file
2) Extract the ac72.exe file from ac72.zip
3) Launch the installer as administrator
4) During the installation process, check your vsk5 folder (default is Documents/vsk5 - if vsk5free Documents/vsk5online )
5) Sometimes an installation program requests that you disable temporary your antivirus software