Use following keys:
In-game:
--------
F1 - Unlimited Shield ON
F2 - Unlimited Shield OFF
-----------------[ Install Notes ]--------------------
1.) Unrar anywhere you want it (use winrar 3.x)
2.) Run it & run the game
3.) Use keys mentioned above and in the trainer itself
-from ryst download the file: r-starscapetrn1.zip
(to unpack archives use: WinZip,WinAce, WinRar)