DOSBOx won't help, because RB3D is for Windows only (unless I missed something). I suggest doing a Google search, I already found a few pages about running RB3D on a modern machine with XP, Vista etc... I know there's something out there called virtual machine (or something like that) that will emulate Windows 98. You can also go buy yourself an old machine (for like 40$) and install Win95 on it. It might be worth it, just to be able to play all those old games. Just a word of warning if you do this, if I remember correctly, configuring those old DOS games in my Win95 machine was a pain in the $%&@. But since RB3D is for Win, setting it up shouldn't be a problem.