Mame Galaxian

[woolfy42]

How do I get 5 lives or use the cheats?

[Daisho]

Access the dip switches with the TAB menu after starting the game and alter the lives setting there, I think this only works with the Namco set 2 rom set. As for cheating, get yourself a cheat data file.
Here's one.

http://cheat.retrogames.com/