For infinite lives in this game, use the DOS utility DEBUG.  
 First backup your game to be edited, then type the following 
 from the DOS prompt:
 
 ren 4r.ae cheater.cht
 debug cheater.cht
 e 32dd 0
 e 5cc8 0
 e 7403 0
 e 4b56 eb
 Then type: w
            q