Once the installation media is mounted in VirtualBox install the game normally making sure to set the installation path to a sub-directory inside G:\Games\
If the installer doesn't automatically create a shortcut on the desktop, navigate to the installation directory in File Explorer > right click the game .exe > Send To > Desktop (create shortcut)
Installing a DOS Based Game
Create a sub-directory in G:\Games\ to copy the game to
Once the installation media is mounted in VirtualBox navigate to it in Windows Explorer
Copy the files from the game media to G:\Games\%game%
Navigate to the desktop > Right click > New > Shortcut
Click the Browse... button > Navigate to the DOSBox .exe file and select it > Click OK > Click Next > Click Finish
Right click the new shortcut > Properties
Edit the shortcut properties as follows
Target: G:\_DOSBOX\DOSBox.exe -userconf "G:\Games\Hugo's House of Horrors" -noconsole
Start in: G:\_DOSBOX\
Click OK
Double click the shortcut to launch DOSBox with the game mounted to the C:\
Launch the game normally by typing the exe name and pressing Enter
The DOSBox configuration file is located at %userprofile%\Local Settings\Application Data\DOSBox and can be edited to set preferences such as the resolution and redering method