Momslucky

Do you have the UK or US version of the game? Then read 'that
mess' as you put it, particularly the howto, and about the fact
that there are official patches for the game that appear to get
it working under wine. Whether that holds true for crossover, I
cannot say (I don't have this title) -- what I posted was a link
to some information that might be another avenue for owners of
this game to look at and try.
I cannot verify the information, but to clarify it for you;
Go to www.atari.com and then to the rollercoaster tycoon page there.
See if there is an official patch for the game in your language and
download it.
Follow the directions in the howto on the page I linked to at WineHQ
on how to install the official patch (the paths will be different for
crossover-games, but if you need help with that post back here)...but,
from the howto, the *crossover-games* procedure will be...
Install the game into it's own bottle
Copy the official patch into the bottle you installed rollercoaster tycoon
into (it looks like the patch must be in the same directory in the bottle
that contains the rct.exe file)
Start cxsetup, highlight the bottle you installed rollercoaster tycoon into,
then click =>configure=>control panel=>run (to run a command in the bottle)
Select the official patch copied above using the 'Browse' button then click
=>open=>run -- that should apply the official patch.
Now try running the game again
Be mindful there are several different versions of this title, and
whether it will work or not sill depend on exactly which version you have.
If you don't have a display capable of 4:3 aspect screen resolutions (640x480
or 800x600), you will have to enable 'Emulate a virtual desktop' in winecfg.