Dont unzip everything!
Use Hoxs64, add a c64 game, then enter under "emulation" edit, the following command:
"-autoload C:\LaunchBox\7-Zip\Temp\Ghostbusters_II_Side_1.g64"
Launchbox is extracting the game "Ghostbusters II" as an example in Temp Folder under 7Zip and is automatic starting Disk 1.
Or use the "Load"*",8,1 command in Launchbox:
"-autoload C:\LaunchBox\7-Zip\Temp\Ghostbusters_II_Side_1.g64" ":*"
Now when you start the game from launchbox, the emulator will type in automatic the standard c64 load for games!
Have fun.