Settlers 2

THUNDER will enable you to be able to build anything. 
When you have the code on, you will see a exclamation 
mark in the top right corner:

ALT-1 up till ALT-6 - 
Change the speed settings of the game.

Press F7 and it will enable you to view the map

For anyone who has added the patch to make it Version 
1.51, the cheat is WINTER