Alley Cat

For infinite lives in this game, use the DOS utility DEBUG. 
First backup your game, then type the following from the
DOS prompt:
ren alley.com cheater.cht
debug cheater.cht
e 134e 90 90 90 90
e 2126 90 90 90 90
e 223e 90 90 90 90
Then type:
w q
Then rename CHEATER.CHT back to its previous name.