I got some more questions yesterday after bloging about how to get you application using Paradox or dBase tables to function under Windows Vista yesterday.
The first one is how do you add BDE to you installation project? That is easy. Just download the BDE Merge Module and add the MSM-file to you Setup-project.
I read a forum post how this can be extended with InstallAware pre-requisites mechanism so the file-set is only downloaded and installed if needed.