Most of the Rave CD's or image files use a much earlier version of Adobe Acrobat, and will not run on the later ones as it says that add-ons required.
With the downloaded version, use Nero to write to a CD, then copy the whole CD to a new folder on your hard drive. That should include the earlier Acrobat reader.
Then make a shortcut to 'rave.exe' in the folder, on to your desktop or quickstart bar.
The files on your hard drive will be 'read-only' as they came off the CD, but that shouldn't be a problem, I changed mine to 'non read-only' as a matter of formality.
Peter