Type in    duncanianbothamfearnleydouble  
at the end of your innings and then your
runs will be doubled.

Also, go into MS-DOS and type in your Ian Botham's 
International Cricket 96's directory and then type in 
debug and type in the number of runs that you want, 
followed by your team. You will then start your first 
innings with your team
after you have cheated with that amount of runs.