Easiest way to get old Windows games to run?

I'm trying to get an old Windows game running for a friend.

It seems to be a 16bit macromedia app and I kind of got it running in a Win 98 VM using Virtualbox. DOSBox seems to get confused by it being a Windows app.

Thing is, the friend is very much not good with tech and I want to set everything up for him to "just work". Installing VBox might be a bit too much.

Apparently, you can install Windows inside DOSBox, but is that really stable and usable for layman? Are there any other approaches?