Invalid data? HELP!

Ok I have no clue how to fix this. I've tried putting in my old RCT CD as well, and nothing. When I tried starting a scenario i downloaded it says that the file contains invalid data or something. How can I get it to run? Help me please!
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Shawn Bailes
Webmaster of Coasters R Us
http://coastersrus.home-page.org

Well for one thing your old RCT disk is usesless. You need to download the RCT patch. I don't know the adress for that patch but I'm sure someone here does. Another possibility is to use a trainer you can download techno trainer for CF/AA at
http://www.techno.danimation.com
If this does'nt work the file is busted.

Download this patch http://www.strategyplanet.com/rctuk/rctpatch/