"Type "RCT2" at the main screen and then press [Enter].  You'll begin with $1,000,000, all rides will be available, and you'll have unlimited loans." - TEM

"If you are having trouble in you're profits, do this-- Raise the prices of you're rides into the limit that you're guests would want to enter the ride. You do not want to see guests say ''Im not paying that much on merry go round 1''.Now handle the rollercoasters. Put them to $6.00 or $5.00. You will see money going in your profits. Now go on the finances window and look at your ride tickets. You will see ride tickets over $1.000.(Depending on how many rides are in your park.)" - The shyguy