As you know, all games from Good Old Games that require a DOS runtime environment usually come packaged with DOSBox and a wraparound for the game's executable. Unfortunately, they haven't seem to have updated their included version of DOSBox since 2008, and so it's up to users to update the packaged version manually. In a similar situation, there are a couple games that run using the ScummVM program, and a user could update said ScummVM simply by downloading the appropriate .zip file and extracting all contents into the game's ScummVM folder. I'm having trouble locating a .zip file, for manual installation, of DOSBox 0.74. All I can find is the installer .exe.

Thanks, but I just copied and pasted everything that was in the /DOSBox folder in the D-Fend fronted program folder. I also noticed that included with GOG's releases is the source package (tar.gz) for 0.72, so I just downloaded the source package for 0.74 and replaced the old one with it.