John,
yes the rwy12_1.zip says it is for FS2004 and so does the EZ-Scenery file but the objects all work with FSX as well. Use caution though with the install of ez_1.zip here is a cut n' paste from one of our read me first files about installing it:
"2. The ez_1.zip file, once it's unzipped, will give you an executable file for installation.
3. MOST IMPORTANT STEP!!!! Install the files via the .exe file to a TEMP folder!! NOT DIRECTLY INTO FSX!!!! This installer was made for FS9 and might cause issues to FSX if you install it there by default! (We're not 100 % sure if it will, but it wasn't made for FSX so we avoided that and created a temporary folder for this file to install the scenery library to first.
4. The result will be a folder named "Addon Scenery". Inside of this folder is a folder named "EZ Scenery Library".
5. Take the new folder "EZ Scenery Library" and make sure that it also includes it's three sub-folders, (new-mdl, scenery, texture) and install that into your FSX "Addon Scenery" library and then don't forget to activate it in FSX as the normal scenery file INSTALLATION steps in the readme.txt show you."
FS9 (FS2004) scenery objects work fine in FSX. The one thing with FS9 files are AI files. If you install FS9 AI files into FSX they will prevent FSX AI files from working. There is a program that will convert these FS9 AI files in your FSX installation and fix things just fine if you accidentally do ever install FS9 AI files in FSX.
Now the OZx libraries are hard to find due to 'stinkin' thinkin' at the OZx site. Here is what to do to get the files.
1. Click the link on the Object Libraries page which takes you to the OZx site.
2. Click the green Download button at the top of the page.
3. Click on the black Agree & Download button.
4. The resulting screen has 7 files that can be downloaded but you only need two of them.
5. Download OZx_Libraries_1.0_install.zip
6. Download OZx_LIB_v1.1.zip
7. Install these two libraries into FSX.
8. Silently cuss under your breath about OZx making it so durn hard to figure out how to get the files!!!
Enjoy the other three objects in the Scenery Tester and in RTMM scenery.