I had this issue as well after a re-install, I will give some links, if the mods allow them to stay great, but these should help you get patches and cs downloads.
Patches
http://www.fileplanet.com/100057/0/0/0/1/section/Patches
or
http://www.gamespot.com/search.html?qs=Roller+Coaster+Tycoon+3
Both have patches for the game, preferance is yours.
Custom Stuff (player made stuff not offical stuff, think of it like mods)
-----------------------------
http://vodhin.org/news.php
http://rctdb.com/
Patches
http://www.fileplanet.com/100057/0/0/0/1/section/Patches
or
http://www.gamespot.com/search.html?qs=Roller+Coaster+Tycoon+3
Both have patches for the game, preferance is yours.
Custom Stuff (player made stuff not offical stuff, think of it like mods)
-----------------------------
http://vodhin.org/news.php
http://rctdb.com/
Michael Brookes
Game Director
