Various cheats
     During  gameplay,  press Enter and type "sleepworker" (no quotes)
to go into cheat mode. Then type in any of the following:

F1 First area 
F2 Second area 
F3 Third area 
F4 Happy 
F5 Passive 
F6 Bored 
F7 Angry 
F8 Hungry 
F9 Injured 
M  $10,000
X  Increase security 
4  Faster
5  Even faster 
6  Fastest
`  Half Speed

Easy money:
     Note:  This  procedure  involves  editing  a  game file; create a
backup  copy of the file before proceeding. Create a new game and save
it  without any changes. Use a text editor to edit the "*.fds" file in
the "\prison tycoon\data\maps" folder. Find the line:

[STATISTICS]
100000,.......................................
[/STATISTICS] 

Replace it with: 
[STATISTICS]
900000000,................
[/STATISTICS] 

Save, then load that game to have $900,000,000.