Actually, to do this, you need to first complete all the scenarios of the original game (using the techno trainer will get you through this very fast) make sure you get the Mega Park scenario opened.
Next install Corkscrew Follies, and add the Drexler patch. On the same website as Drexler's patch, he also has different version of the Mega park that you can download. The one I downloaded was completely flat, no trees, and a budget of $100,000,000.00
All these downloads and instructions can be found over at Danimation.
...not that I encourage cheating, or anything....
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Neil
By popular vote, the official start
of the Millennium has been moved to
May 13, 2000