This is really good in WinXP. Open two search panes. In the first search for Vanillahills, or goldrush. It should locate the applicable file such as vanillahills.dat or goldrush.dat. Highlight and open containing folder. All 18 scenarios *.dat files appear. In your second search pane, find New Scenarios. Open the folder. Copy all *.dat into new scenario folder. Start RCT3. Go to Tools, New Scenario. Open the Vanillahills file you just copied into this section. Edit freely, inventions, money, land, etc. Add coasters and other rides if you want. Save it. Now, when playing the game; Save the first scenario as mygame or something easy. Exit to main career menu. Use alt/esc to minimize RCT3 and open your search pane again. Search for New scenario and open the folder. Second search pane, search for mygame. Highlight Mygame and open containing folder. You want to copy the edited Vanillahills file and place it into the Scenario1 folder. Go back to RCT3 and you should be able to open your choice of the edited Vanillahills or Mygame. Do this for all the scenarios as you play though them if you want. RCT3 will keep track of you finishing each edited scenario as if it was the original data. You can also do this for the soaked and wild scenarios. I really liked having access to the dead zone in the center of Money Pit. And my La-La-land expanded to include a haunted forest and Westworld.