FYI, for anyone who picked-up this WC3 for free:
Go read about the DosBox configuration file and how to change the settings.
You will probably want to change the FILTER setting, I set mine to "2xsai forced" and it makes things look a little better.
Also if using a modern joystick you want to change your joystick configuration to CHpro, then map your buttons.
I was able to map ship's guns and missiles to separate buttons using the DosBox's built in keymapper. You can hack your throttle and twist (roll) axis to work by mapping them to keyboard commands. Now I can fly with twist-axis controlling my ship's Roll, much better than the default.