Unlimited Resources:

The save game file is in text format. Open the save game of your choice using Wordpad. Press Edit and select Find: The file is too big to manually get to where you want. Type "MOTHER" in the find box and click ok. Scroll down 10 or so lines until you find the lines that state : 

FOOD

WOOD

GOLD 

Edit the values just how you like them (100000 will do nicely). Save the file and reload the game.