Can anyone please help, I have tried to install custom scenery and managed to find it in my menus, but as soon as I move the mouse over an item the whole game freezes up and the only thing I can do is go into task manager and restart the computer. can anyone please give me some advice.

you installed it wrong then

I have think I've installed it correct, downloaded the file, un zipped it and copped into the file :-
C / program files 86 / Atari / Rollercoaster tycoon 3 / Style / Themed. If this is incorrect please can you advise. thanks.

is that where the file was supposed to be installed?

I think so, I watched a u tube video (RCT3 Tutorial how to install custom scenery) and followed that until it showed up in my menu, its worked for Moby's steel jungle and can use that ok, but freezes on others I tried to install.

what set is it? also, does it have a 'read me' file included with the files?

I was trying to install the custom vendors, first in the custom scenery downloads, only has lots of ovi files.