If you're really interesting in cheating may I suggest a trainer. 8Cars is the de facto trainer for most. Son of Beast is alright but hasn't quite lived up to The Beast. (Note: These are RCT2)
RCT1 has a lot of trainers available. Most notable is probably The Beast. The Drexler Patch is also common as it allows game play to continue dispite hacks, prevents crashes common with trainer use in RCT2.
Just as an FYI for you all. We are putting together a list of tips and cheats for RCT 2 & 3. When you list tips and tricks, please be clear on which version of the game (or expansion pack) the trick or cheat works on.
Thank you for your help.
MiceChat 101: Be NICE! If you don't play well with others, you are in the wrong sandbox.