Press CTRL + SHIFT + C to pop up the window and type in the following:

Code - Effect

kaching - get 1000 cash
aging - no aging
vsync (on/off) - increases game performance but lowers graphics
autopatch (on/off) - lets you know if theres a patch
help - list some, but not all cheat
moveobjects (on/off) - moves objects and deletes you couldnt before
exit - closes cheat window
expand - expands or contracts cheat window
rosebud - 10,000 Simoleans