For infinate lives, and bombs in this game, use the DOS
 utility DEBUG. First backup your game to be edited, then
 type the following from the dos prompt:

 ren e:\shark.dat cheater.cht
 debug
 a 100
 mov dx,es
 add dx,1000
 mov es,dx   <PRESS ENTER TWICE!>
 g 108
 r ip 100
 ne:\cheater.cht
 l
 e es:e813 90 90
 e es:f24f 90 90 90 90
 w
 q

 Then rename CHEATER.CHT back to its previous name.