There are a *lot* of changes between Crystal 7 and 9. You need to check out file RUNTIME.CHM, which is on the CD. This lists the files that you require. This has to be taken with a pinch of salt. It's not entirely accurate, especially if you are supporting multiple languages!
The Crystal 9 files are supplied as merge modules (*.MSM). I wanted the files out of the merge modules, so I used InstallShield DevStudio 9 to create a "wrapper" project and that can create a (CD-Rom) kit with all the files separately-accessible. As a result, I have a subset of Crystal in my main project installer, but I have four languages in about the same size kit as one language .MSI!
Hope that helps,
Vector Networks Ltd.