To start Tubular, double-click the RUN file.

To setup the virtual joystick in the emulator:
* Go to Settings -> Joystick settings -> Joystick settings...
* Under Joystick #2, selct "Numpad + RCtrl"
* Click OK

To play the game:
* use the Right Ctrl key as the "firebutton"
* use the left/right (4/6) buttons on the numeric keypad to move the character left/right
* use the Esc key as a "kill button". You'll know when to use it.