Type in POOSLICE as your name to enable the cheats.  When your done
typing it in a weird sound will start playing.  That's telling you
that the cheats are on. Then you can delete the name and type in whatever
you want.

At the research screen:
0               Add more options to research menu
U               Finish a days worth of research
.               10,000 credits

During the game:
ALT-C           Complete the level
ALT-T           Teleport active agent to cursor location
SHIFT-Q         Full weapons and health

Command line parameters:
/mx             Skip to that mission (where x is a number between 1 and 108)

To use the command line parameter, start the game with
main /w /g
and add them to the end of the line or add them on that line in the PLAY.BAT
file.