How on earth do you install rct3 from a CD on windows 7 and what do you have to do and how long does it take to install from a CD HELP

Rollercoaster Tycoon 3 works on Vista but Windows 7, I do not know. If you have installed the game (which would take around 2-4 minutes), change the compatibility to an older O/S. To do this, right click the RCT3 icon from your desktop or start menu, select properties, select the Compatibility tab at the top and now click the tick box with the description - Run this program in compatibility mode for:.
After this, select an O/S, try Windows Vista or Windows XP.

If this does not work, you may need to find a patch which allows the game to work on Windows 7.

Good luck.