Please indicate your *.exe language for submit your test result.
Anyone who is having problems, please install the patch before posting, adding bugs, or writing tests.
To get it all running, some instructions need to be followed. Apparently there are different copies of this game that behave differently, this is for my copy, which is the UK Hasbro Interactive disc, which is yellow (there are non UK ones, blue ones and black ones too).
Grab the UK version of the patch from here: http://www.atari.com/rollercoastertycoon/test/patches/RCT-UK.exe.
To make the patch work:
Install the game (needs to be freshly installed so the registry keys are put in place for the patch to find the the game). The installer won't work unless you are in its directory.
Now copy /English/RCT.icd from the game CD to the game's install directory.
Now run the patch, which should work.
Now run the game!
To clarify, you need to run (change paths to your own system):
The only 'RTC' in the American version was a .exe (no difference?)
I just copied it anyway and the game worked.
Also, the file will be under .../American/... instead of .../English/...
for the Anerican version.