What's new:
The grid is back.
Print GameBoard is back.
The "classic" accelerators are back.
Cheat support has been added.
Numerous bug fixes.
Get it here: http://lasertank.worldwizard.net/
Oh, and the cheats are:
swimming = Water doesn't kill you
ghostly = Solid objects are no longer solid
invincible = Tank cannot die, from any cause