Edit Starting Money:
NOTE: This involves editing a game file so make a back-up before proceeding.

Look for the file initialpref.* in the drive letter:\program files\infogrames interactive\monopoly tycoon\ directory or your custom install path. Each scenario folder contains the file initalpref.*

Use a text editor to open the file (in each scenario folder) and you can change the amount of starting money for you and your computer opponents on easy, normal, and hard.